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rss2.xml
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<?xml version="1.0" encoding="utf-8"?>
<rss version="2.0"
xmlns:atom="http://www.w3.org/2005/Atom"
xmlns:content="http://purl.org/rss/1.0/modules/content/">
<channel>
<title>微弱的光</title>
<link>http://shiff.top/</link>
<atom:link href="http://shiff.top/rss2.xml" rel="self" type="application/rss+xml"/>
<description>千里之行，始于足下</description>
<pubDate>Mon, 17 Jun 2024 05:32:14 GMT</pubDate>
<generator>http://hexo.io/</generator>
<item>
<title>vue中的生命周期钩子函数</title>
<link>http://shiff.top/2024/06/17/vue%E4%B8%AD%E7%9A%84%E7%94%9F%E5%91%BD%E5%91%A8%E6%9C%9F%E9%92%A9%E5%AD%90%E5%87%BD%E6%95%B0/</link>
<guid>http://shiff.top/2024/06/17/vue%E4%B8%AD%E7%9A%84%E7%94%9F%E5%91%BD%E5%91%A8%E6%9C%9F%E9%92%A9%E5%AD%90%E5%87%BD%E6%95%B0/</guid>
<pubDate>Mon, 17 Jun 2024 05:27:59 GMT</pubDate>
<description><h1 id="vue中的生命周期钩子函数"><a href="#vue中的生命周期钩子函数" class="headerlink" title="vue中的生命周期钩子函数"></a>vue中的生命周期钩子函数</h1><p>在 Vue 3 中，生命周期函数总体上经历了一些改变</description>
<content:encoded><![CDATA[<h1 id="vue中的生命周期钩子函数"><a href="#vue中的生命周期钩子函数" class="headerlink" title="vue中的生命周期钩子函数"></a>vue中的生命周期钩子函数</h1><p>在 Vue 3 中，生命周期函数总体上经历了一些改变，并引入了 Composition API，与 Vue 2.x 中的选项 API 有所不同。以下是 Vue 3 中常用的生命周期函数：</p><ol><li><p><strong>setup</strong>：组件创建阶段的入口，在组件实例创建之前执行，用于设置组件的初始状态、逻辑以及副作用操作等。</p></li><li><p><strong>beforeCreate</strong>：与 Vue 2.x 中的 <code>beforeCreate</code> 类似，在组件实例初始化之后，数据观测之前被调用。</p></li><li><p><strong>created</strong>：与 Vue 2.x 中的 <code>created</code> 类似，在实例创建完成后被调用，实例已完成数据观测、属性和方法运算。</p></li><li><p><strong>beforeMount</strong>：与 Vue 2.x 中的 <code>beforeMount</code> 类似，在挂载开始之前被调用，相关的 render 函数首次调用。</p></li><li><p><strong>mounted</strong>：与 Vue 2.x 中的 <code>mounted</code> 类似，在挂载结束后被调用，实例已挂载到 DOM 上。</p></li><li><p><strong>beforeUpdate</strong>：当数据更改导致虚拟 DOM 重新渲染之前调用。</p></li><li><p><strong>updated</strong>：当数据更改导致虚拟 DOM 重新渲染和打补丁后调用。</p></li><li><p><strong>beforeUnmount</strong>：在卸载组件之前调用。</p></li><li><p><strong>unmounted</strong>：在卸载组件后调用。</p></li><li><p><strong>errorCaptured</strong>：捕获组件子树中任何错误的处理器。</p></li></ol><p>除了上述生命周期函数外，Vue 3 还引入了 Composition API，开发者可以使用 <code>onMounted</code>、<code>onUpdated</code>、<code>onUnmounted</code> 等函数来实现类似生命周期钩子的功能。Composition API 提供了更灵活的方式来组织组件的逻辑。请注意，Vue 3 中的生命周期钩子函数与 Vue 2.x 中可能略有差异，主要是由于引入了 Composition API 的改变。</p>]]></content:encoded>
<category domain="http://shiff.top/tags/Vue3/">Vue3</category>
<comments>http://shiff.top/2024/06/17/vue%E4%B8%AD%E7%9A%84%E7%94%9F%E5%91%BD%E5%91%A8%E6%9C%9F%E9%92%A9%E5%AD%90%E5%87%BD%E6%95%B0/#disqus_thread</comments>
</item>
<item>
<title>使用线性渐变实现渐变背景</title>
<link>http://shiff.top/2024/06/17/%E4%BD%BF%E7%94%A8%E7%BA%BF%E6%80%A7%E6%B8%90%E5%8F%98%E5%AE%9E%E7%8E%B0%E6%B8%90%E5%8F%98%E8%83%8C%E6%99%AF/</link>
<guid>http://shiff.top/2024/06/17/%E4%BD%BF%E7%94%A8%E7%BA%BF%E6%80%A7%E6%B8%90%E5%8F%98%E5%AE%9E%E7%8E%B0%E6%B8%90%E5%8F%98%E8%83%8C%E6%99%AF/</guid>
<pubDate>Mon, 17 Jun 2024 01:57:06 GMT</pubDate>
<description><h1 id="使用线性渐变实现渐变背景"><a href="#使用线性渐变实现渐变背景" class="headerlink" title="使用线性渐变实现渐变背景"></a>使用线性渐变实现渐变背景</h1><figure class="highlight css"><ta</description>
<content:encoded><![CDATA[<h1 id="使用线性渐变实现渐变背景"><a href="#使用线性渐变实现渐变背景" class="headerlink" title="使用线性渐变实现渐变背景"></a>使用线性渐变实现渐变背景</h1><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="attribute">background-image</span>: <span class="built_in">linear-gradient</span>(<span class="number">270deg</span>, <span class="number">#f66</span>, <span class="number">#ff9f9f</span>);</span><br></pre></td></tr></table></figure><p>这段CSS代码是用于设置元素的背景图片，但是这里使用的不是传统的图像文件，而是通过线性渐变（linear gradient）来实现背景效果。让我们来解释一下这段代码的含义：</p><ol><li><p><strong><code>background-image:</code></strong> 这是CSS属性，用于设置元素的背景图片。</p></li><li><p><strong><code>linear-gradient(270deg, #f66, #ff9f9f);</code></strong> 这是具体的背景图片值，表示使用线性渐变（从一个颜色过渡到另一个颜色）来创建背景。</p></li></ol><ul><li><p><strong><code>270deg</code></strong> 表示指定线性渐变的方向为270度，即从底部到顶部的垂直方向。</p></li><li><p><strong><code>#f66</code></strong> 和 <strong><code>#ff9f9f</code></strong> 是渐变的起始色和结束色。第一个颜色 <code>#f66</code> 代表浅红色，第二个是 <code>#ff9f9f</code> 代表淡红色。在这种情况下，从底部到顶部的背景将逐渐从浅红色过渡到淡红色。</p></li></ul><p>所以，这段代码的意思是设置元素的背景为从底部到顶部的垂直线性渐变，颜色过渡从浅红色（<code>#f66</code>）到淡红色（<code>#ff9f9f</code>）。这样的效果会创建一个具有渐变色的背景，使元素看起来更加丰富和动态。</p>]]></content:encoded>
<category domain="http://shiff.top/tags/CSS/">CSS</category>
<comments>http://shiff.top/2024/06/17/%E4%BD%BF%E7%94%A8%E7%BA%BF%E6%80%A7%E6%B8%90%E5%8F%98%E5%AE%9E%E7%8E%B0%E6%B8%90%E5%8F%98%E8%83%8C%E6%99%AF/#disqus_thread</comments>
</item>
<item>
<title>Flex布局与Grid布局</title>
<link>http://shiff.top/2024/06/17/Flex%E5%B8%83%E5%B1%80%E4%B8%8EGrid%E5%B8%83%E5%B1%80/</link>
<guid>http://shiff.top/2024/06/17/Flex%E5%B8%83%E5%B1%80%E4%B8%8EGrid%E5%B8%83%E5%B1%80/</guid>
<pubDate>Mon, 17 Jun 2024 01:46:29 GMT</pubDate>
<description><h1 id="Flex布局与Grid布局"><a href="#Flex布局与Grid布局" class="headerlink" title="Flex布局与Grid布局"></a>Flex布局与Grid布局</h1><p>Grid布局和Flex布局都是在CSS中用于进行页面</description>
<content:encoded><![CDATA[<h1 id="Flex布局与Grid布局"><a href="#Flex布局与Grid布局" class="headerlink" title="Flex布局与Grid布局"></a>Flex布局与Grid布局</h1><p>Grid布局和Flex布局都是在CSS中用于进行页面布局的工具，它们各有优势和适用场景。以下是它们的一些异同点以及优缺点：</p><p><strong>异同点：</strong></p><ol><li><p><strong>相同点：</strong></p><ul><li>两者都是现代CSS布局工具，用于实现响应式布局和页面排版。</li><li>都支持对网格和弹性盒子进行灵活布局。</li><li>都可以在容器内部的子元素之间创建空间布局。</li></ul></li><li><p><strong>不同点：</strong></p><ul><li><p><strong>Flex布局（弹性布局）：</strong></p><ul><li>适用于一维布局，例如在一条水平或垂直的轴线上布局元素。</li><li>适合于构建灵活的、水平或垂直居中的布局。</li><li>可以根据内容的大小来调整元素的尺寸。</li></ul></li><li><p><strong>Grid布局（网格布局）：</strong></p><ul><li>适用于二维布局，可以在交叉轴上对元素进行定位，创建复杂的网格布局。</li><li>适用于规划复杂的网格结构，如页面布局的整体设计。</li><li>可以控制行与列交叉点的位置，实现更精确的布局设计。</li></ul></li></ul></li></ol><p><strong>优缺点：</strong></p><ol><li><p><strong>Flex布局优点：</strong></p><ul><li>简单实用，适合搭建基本的布局和页面结构。</li><li>支持响应式布局，更容易实现移动端适配，适合移动端开发。</li><li>配合弹性盒子布局的属性丰富，可以快速实现元素的排列和对齐。</li></ul><p><strong>缺点：</strong></p><ul><li>适用于相对简单布局，复杂的网格结构可能实现起来比较困难。</li><li>不太适合搭建复杂的多列布局。</li></ul></li><li><p><strong>Grid布局优点：</strong></p><ul><li>可以实现更复杂的网格布局，可以精确控制元素的位置和大小。</li><li>适合搭建大型网站和复杂的设计布局。</li><li>支持分区和定位，可以创建更灵活的页面结构。</li></ul><p><strong>缺点：</strong></p><ul><li>学习成本相对较高，语法相对复杂，初学者可能需要一定时间适应。</li><li>在一维布局方面不如Flex布局灵活，并不适用于所有布局场景。</li></ul></li></ol><p><strong>结论：</strong> </p><ul><li>如果页面结构相对简单，主要涉及到一维布局的元素排列和对齐，Flex布局是一个不错的选择。</li><li>如果需要实现复杂的二维布局，例如创建大型网格结构，Grid布局更适合用来实现。</li><li>在实际项目中，可以根据具体需求和布局复杂度来选择合适的布局方法，有时候也可以结合使用两者来实现更灵活和多样化的布局效果。</li></ul>]]></content:encoded>
<category domain="http://shiff.top/categories/CSS/">CSS</category>
<category domain="http://shiff.top/tags/CSS/">CSS</category>
<comments>http://shiff.top/2024/06/17/Flex%E5%B8%83%E5%B1%80%E4%B8%8EGrid%E5%B8%83%E5%B1%80/#disqus_thread</comments>
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<item>
<title>文本的截断和显示控制</title>
<link>http://shiff.top/2024/06/16/%E6%96%87%E6%9C%AC%E7%9A%84%E6%88%AA%E6%96%AD%E5%92%8C%E6%98%BE%E7%A4%BA%E6%8E%A7%E5%88%B6/</link>
<guid>http://shiff.top/2024/06/16/%E6%96%87%E6%9C%AC%E7%9A%84%E6%88%AA%E6%96%AD%E5%92%8C%E6%98%BE%E7%A4%BA%E6%8E%A7%E5%88%B6/</guid>
<pubDate>Sun, 16 Jun 2024 15:32:11 GMT</pubDate>
<description><h1 id="文本的截断和显示控制"><a href="#文本的截断和显示控制" class="headerlink" title="文本的截断和显示控制"></a>文本的截断和显示控制</h1><p>下面三个属性通常用于在Web开发中对文本进行截断和显示控制，主要用于控制文本</description>
<content:encoded><![CDATA[<h1 id="文本的截断和显示控制"><a href="#文本的截断和显示控制" class="headerlink" title="文本的截断和显示控制"></a>文本的截断和显示控制</h1><p>下面三个属性通常用于在Web开发中对文本进行截断和显示控制，主要用于控制文本在容器中的显示方式。具体含义如下：</p><ol><li><p><code>display: -webkit-box;</code>：这个属性用于指定元素应该生成一个块级容器框。在这种布局模型中，元素是一个块级容器，可以在内部容纳其他元素。在这种情况下，通常需要与其他属性结合使用。</p></li><li><p><code>-webkit-line-clamp: 2;</code>：这个属性用于指定显示的行数限制。在文本溢出时，只显示指定行数的文本内容。上面的例子中，只显示不超过两行的文本内容。</p></li><li><p><code> -webkit-box-orient: vertical;</code>：这个属性用于指定盒子的排列方向。在这种情况下，盒子内的元素垂直排列。</p></li></ol><p>这些属性通常与前缀 <code>-webkit-</code> 一起使用，表示这些属性是Webkit浏览器专有的CSS扩展。这些属性主要用于控制元素的显示方式，特别是在限制文本显示行数和盒子内元素排列方向方面。</p>]]></content:encoded>
<category domain="http://shiff.top/tags/CSS/">CSS</category>
<comments>http://shiff.top/2024/06/16/%E6%96%87%E6%9C%AC%E7%9A%84%E6%88%AA%E6%96%AD%E5%92%8C%E6%98%BE%E7%A4%BA%E6%8E%A7%E5%88%B6/#disqus_thread</comments>
</item>
<item>
<title>text-overflow的用法</title>
<link>http://shiff.top/2024/06/14/text-overflow%E7%9A%84%E7%94%A8%E6%B3%95/</link>
<guid>http://shiff.top/2024/06/14/text-overflow%E7%9A%84%E7%94%A8%E6%B3%95/</guid>
<pubDate>Fri, 14 Jun 2024 10:15:57 GMT</pubDate>
<description><h1 id="text-overflow的用法"><a href="#text-overflow的用法" class="headerlink" title="text-overflow的用法"></a>text-overflow的用法</h1><p><code>text-ove</description>
<content:encoded><![CDATA[<h1 id="text-overflow的用法"><a href="#text-overflow的用法" class="headerlink" title="text-overflow的用法"></a>text-overflow的用法</h1><p><code>text-overflow</code>是CSS样式属性，用于控制当文本溢出容器时如何显示。</p><p>常见的取值有：</p><ul><li><code>clip</code>：默认值，表示将溢出的部分隐藏。</li><li><code>ellipsis</code>：表示将溢出的文本显示为省略号（…）。</li><li><code>inherit</code>：继承父元素的文本溢出样式。</li></ul><p>示例：</p><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.text-ellipsis</span> {</span><br><span class="line"> <span class="attribute">white-space</span>: nowrap; <span class="comment">/* 不换行 */</span></span><br><span class="line"> <span class="attribute">overflow</span>: hidden; <span class="comment">/* 溢出隐藏 */</span></span><br><span class="line"> <span class="attribute">text-overflow</span>: ellipsis; <span class="comment">/* 超出部分以省略号显示 */</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>在上面的示例中，当文本内容超出容器的宽度时，将以省略号的形式显示。需要注意的是，通常需要配合<code>white-space: nowrap;</code>和<code>overflow: hidden;</code>这两个样式属性一起使用，来确保省略号的效果正常显示。</p><p><code>text-overflow</code>通常用于单行文本或者内联元素，对于多行文本或块级元素，更适合使用<code>-webkit-line-clamp</code>结合<code>-webkit-box</code>来实现类似的效果。</p>]]></content:encoded>
<comments>http://shiff.top/2024/06/14/text-overflow%E7%9A%84%E7%94%A8%E6%B3%95/#disqus_thread</comments>
</item>
<item>
<title>less中的&符号</title>
<link>http://shiff.top/2024/06/14/less%E4%B8%AD%E7%9A%84&%E7%AC%A6%E5%8F%B7/</link>
<guid>http://shiff.top/2024/06/14/less%E4%B8%AD%E7%9A%84&%E7%AC%A6%E5%8F%B7/</guid>
<pubDate>Fri, 14 Jun 2024 03:23:54 GMT</pubDate>
<description><h1 id="less中的-amp-符号"><a href="#less中的-amp-符号" class="headerlink" title="less中的&amp;符号"></a>less中的&amp;符号</h1><p>在 Less 预处理器中，<code>&amp;</</description>
<content:encoded><![CDATA[<h1 id="less中的-amp-符号"><a href="#less中的-amp-符号" class="headerlink" title="less中的&符号"></a>less中的&符号</h1><p>在 Less 预处理器中，<code>&</code> 符号用于引用当前选择器的父级。这在嵌套规则中非常有用，可以帮助生成更复杂的选择器，而不需要重复父选择器的名称。</p><h3 id="基本用法"><a href="#基本用法" class="headerlink" title="基本用法"></a>基本用法</h3><p>在 Less 中，<code>&</code> 符号代表父选择器，可以用来构建更复杂的选择器规则。例如：</p><figure class="highlight less"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.container</span> {</span><br><span class="line"> <span class="attribute">color</span>: black;</span><br><span class="line"> </span><br><span class="line"> <span class="selector-tag">&</span><span class="selector-pseudo">:hover</span> {</span><br><span class="line"> <span class="attribute">color</span>: blue;</span><br><span class="line"> }</span><br><span class="line"> </span><br><span class="line"> <span class="selector-tag">&</span><span class="selector-pseudo">::before</span> {</span><br><span class="line"> <span class="attribute">content</span>: <span class="string">"Prefix"</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>编译后的 CSS 如下：</p><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.container</span> {</span><br><span class="line"> <span class="attribute">color</span>: black;</span><br><span class="line">}</span><br><span class="line"><span class="selector-class">.container</span><span class="selector-pseudo">:hover</span> {</span><br><span class="line"> <span class="attribute">color</span>: blue;</span><br><span class="line">}</span><br><span class="line"><span class="selector-class">.container</span><span class="selector-pseudo">::before</span> {</span><br><span class="line"> <span class="attribute">content</span>: <span class="string">"Prefix"</span>;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><h3 id="具体示例"><a href="#具体示例" class="headerlink" title="具体示例"></a>具体示例</h3><p>以下是一些常见的 <code>&</code> 符号用法示例：</p><h4 id="1-伪类和伪元素"><a href="#1-伪类和伪元素" class="headerlink" title="1. 伪类和伪元素"></a>1. 伪类和伪元素</h4><figure class="highlight less"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.button</span> {</span><br><span class="line"> <span class="attribute">background-color</span>: green;</span><br><span class="line"> </span><br><span class="line"> <span class="selector-tag">&</span><span class="selector-pseudo">:hover</span> {</span><br><span class="line"> <span class="attribute">background-color</span>: darkgreen;</span><br><span class="line"> }</span><br><span class="line"> </span><br><span class="line"> <span class="selector-tag">&</span><span class="selector-pseudo">::after</span> {</span><br><span class="line"> <span class="attribute">content</span>: <span class="string">" (hover me)"</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>编译后的 CSS：</p><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.button</span> {</span><br><span class="line"> <span class="attribute">background-color</span>: green;</span><br><span class="line">}</span><br><span class="line"><span class="selector-class">.button</span><span class="selector-pseudo">:hover</span> {</span><br><span class="line"> <span class="attribute">background-color</span>: darkgreen;</span><br><span class="line">}</span><br><span class="line"><span class="selector-class">.button</span><span class="selector-pseudo">::after</span> {</span><br><span class="line"> <span class="attribute">content</span>: <span class="string">" (hover me)"</span>;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><h4 id="2-子选择器"><a href="#2-子选择器" class="headerlink" title="2. 子选择器"></a>2. 子选择器</h4><figure class="highlight less"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.nav</span> {</span><br><span class="line"> <span class="selector-tag">&</span><span class="selector-tag">-item</span> {</span><br><span class="line"> <span class="attribute">color</span>: red;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>编译后的 CSS：</p><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.nav-item</span> {</span><br><span class="line"> <span class="attribute">color</span>: red;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><h4 id="3-父选择器引用"><a href="#3-父选择器引用" class="headerlink" title="3. 父选择器引用"></a>3. 父选择器引用</h4><figure class="highlight less"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.list</span> {</span><br><span class="line"> <span class="selector-class">.list-item</span> {</span><br><span class="line"> <span class="attribute">color</span>: blue;</span><br><span class="line"> </span><br><span class="line"> <span class="selector-tag">&</span><span class="selector-class">.active</span> {</span><br><span class="line"> <span class="attribute">color</span>: darkblue;</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>编译后的 CSS：</p><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.list</span> <span class="selector-class">.list-item</span> {</span><br><span class="line"> <span class="attribute">color</span>: blue;</span><br><span class="line">}</span><br><span class="line"><span class="selector-class">.list</span> <span class="selector-class">.list-item</span><span class="selector-class">.active</span> {</span><br><span class="line"> <span class="attribute">color</span>: darkblue;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><h4 id="4-嵌套媒体查询"><a href="#4-嵌套媒体查询" class="headerlink" title="4. 嵌套媒体查询"></a>4. 嵌套媒体查询</h4><figure class="highlight less"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.container</span> {</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">100%</span>;</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">@media</span> (<span class="attribute">min-width</span>: <span class="number">768px</span>) {</span><br><span class="line"> <span class="selector-tag">&</span> {</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">50%</span>;</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>编译后的 CSS：</p><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.container</span> {</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">100%</span>;</span><br><span class="line">}</span><br><span class="line"><span class="keyword">@media</span> (<span class="attribute">min-width</span>: <span class="number">768px</span>) {</span><br><span class="line"> <span class="selector-class">.container</span> {</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">50%</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><h3 id="总结"><a href="#总结" class="headerlink" title="总结"></a>总结</h3><p><code>&</code> 符号在 Less 中非常强大，可以帮助你避免重复代码，并使样式表更具可读性和可维护性。通过合理使用 <code>&</code> 符号，可以轻松创建复杂的选择器规则，提升 CSS 编写的效率和灵活性。</p>]]></content:encoded>
<category domain="http://shiff.top/tags/Less/">Less</category>
<comments>http://shiff.top/2024/06/14/less%E4%B8%AD%E7%9A%84&%E7%AC%A6%E5%8F%B7/#disqus_thread</comments>
</item>
<item>
<title>overflow的用法</title>
<link>http://shiff.top/2024/06/14/overflow%E7%9A%84%E7%94%A8%E6%B3%95/</link>
<guid>http://shiff.top/2024/06/14/overflow%E7%9A%84%E7%94%A8%E6%B3%95/</guid>
<pubDate>Fri, 14 Jun 2024 03:05:16 GMT</pubDate>
<description><h1 id="Overflow的用法"><a href="#Overflow的用法" class="headerlink" title="Overflow的用法"></a>Overflow的用法</h1><p><code>overflow</code> 是 CSS 中的一个属性</description>
<content:encoded><![CDATA[<h1 id="Overflow的用法"><a href="#Overflow的用法" class="headerlink" title="Overflow的用法"></a>Overflow的用法</h1><p><code>overflow</code> 是 CSS 中的一个属性，用于控制元素内容在水平方向和垂直方向上的溢出行为。它决定了当内容溢出元素的尺寸时，是否显示滚动条、截断内容或其他处理方式。</p><h3 id="语法"><a href="#语法" class="headerlink" title="语法"></a>语法</h3><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="attribute">overflow</span>: visible | hidden | scroll | auto;</span><br></pre></td></tr></table></figure><h3 id="属性值"><a href="#属性值" class="headerlink" title="属性值"></a>属性值</h3><ul><li><code>visible</code>：默认值。内容不会被剪裁，会呈现在元素框之外。</li><li><code>hidden</code>：溢出内容会被剪裁（隐藏），不会显示滚动条。</li><li><code>scroll</code>：无论内容是否溢出，都会显示滚动条。</li><li><code>auto</code>：如果内容溢出，浏览器会自动显示滚动条。</li></ul><h3 id="示例"><a href="#示例" class="headerlink" title="示例"></a>示例</h3><p>假设有一个包含大量文本的容器：</p><figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">div</span> <span class="attr">class</span>=<span class="string">"container"</span>></span></span><br><span class="line"> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse varius enim in eros elementum tristique.</span><br><span class="line"><span class="tag"></<span class="name">div</span>></span></span><br></pre></td></tr></table></figure><p>CSS 代码如下：</p><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.container</span> {</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">200px</span>;</span><br><span class="line"> <span class="attribute">height</span>: <span class="number">100px</span>;</span><br><span class="line"> <span class="attribute">border</span>: <span class="number">1px</span> solid black;</span><br><span class="line"> <span class="attribute">overflow</span>: auto; <span class="comment">/* 自动显示滚动条 */</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>在这个例子中：</p><ul><li>当容器的内容宽度或高度超过 200px 或 100px 时，浏览器会自动显示水平或垂直滚动条，以便用户可以滚动查看内容。</li></ul><h3 id="各属性值示例"><a href="#各属性值示例" class="headerlink" title="各属性值示例"></a>各属性值示例</h3><ol><li><code>visible</code>：</li></ol><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.container</span> {</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">200px</span>;</span><br><span class="line"> <span class="attribute">height</span>: <span class="number">100px</span>;</span><br><span class="line"> <span class="attribute">border</span>: <span class="number">1px</span> solid black;</span><br><span class="line"> <span class="attribute">overflow</span>: visible;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>内容会溢出容器，不会显示滚动条。</p><ol start="2"><li><code>hidden</code>：</li></ol><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.container</span> {</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">200px</span>;</span><br><span class="line"> <span class="attribute">height</span>: <span class="number">100px</span>;</span><br><span class="line"> <span class="attribute">border</span>: <span class="number">1px</span> solid black;</span><br><span class="line"> <span class="attribute">overflow</span>: hidden;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>内容会被剪裁，溢出部分不可见，不会显示滚动条。</p><ol start="3"><li><code>scroll</code>：</li></ol><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.container</span> {</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">200px</span>;</span><br><span class="line"> <span class="attribute">height</span>: <span class="number">100px</span>;</span><br><span class="line"> <span class="attribute">border</span>: <span class="number">1px</span> solid black;</span><br><span class="line"> <span class="attribute">overflow</span>: scroll;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>无论内容是否溢出，都会显示滚动条。</p><ol start="4"><li><code>auto</code>：</li></ol><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.container</span> {</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">200px</span>;</span><br><span class="line"> <span class="attribute">height</span>: <span class="number">100px</span>;</span><br><span class="line"> <span class="attribute">border</span>: <span class="number">1px</span> solid black;</span><br><span class="line"> <span class="attribute">overflow</span>: auto;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>当内容溢出时，浏览器会自动显示滚动条。</p><h3 id="组合使用-overflow-x-和-overflow-y"><a href="#组合使用-overflow-x-和-overflow-y" class="headerlink" title="组合使用 overflow-x 和 overflow-y"></a>组合使用 <code>overflow-x</code> 和 <code>overflow-y</code></h3><p>有时你可能需要分别控制水平方向和垂直方向的溢出行为，这时可以使用 <code>overflow-x</code> 和 <code>overflow-y</code> 属性。</p><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.container</span> {</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">200px</span>;</span><br><span class="line"> <span class="attribute">height</span>: <span class="number">100px</span>;</span><br><span class="line"> <span class="attribute">border</span>: <span class="number">1px</span> solid black;</span><br><span class="line"> <span class="attribute">overflow-x</span>: auto; <span class="comment">/* 水平方向自动显示滚动条 */</span></span><br><span class="line"> <span class="attribute">overflow-y</span>: hidden; <span class="comment">/* 垂直方向隐藏溢出内容 */</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure><h3 id="注意事项"><a href="#注意事项" class="headerlink" title="注意事项"></a>注意事项</h3><ul><li><code>overflow</code> 属性仅在元素具有限定的宽度和高度时起作用。</li><li><code>overflow</code> 属性常用于创建滚动区域，特别是在布局响应式设计中。</li></ul><p>通过合理使用 <code>overflow</code> 属性，可以更好地控制元素内容在水平方向和垂直方向上的显示方式，提升页面的可读性和用户体验。</p>]]></content:encoded>
<category domain="http://shiff.top/tags/CSS/">CSS</category>
<comments>http://shiff.top/2024/06/14/overflow%E7%9A%84%E7%94%A8%E6%B3%95/#disqus_thread</comments>
</item>
<item>
<title>Axios学习</title>
<link>http://shiff.top/2024/05/24/Axios%E5%AD%A6%E4%B9%A0/</link>
<guid>http://shiff.top/2024/05/24/Axios%E5%AD%A6%E4%B9%A0/</guid>
<pubDate>Fri, 24 May 2024 08:32:36 GMT</pubDate>
<description><h1 id="Axiso库"><a href="#Axiso库" class="headerlink" title="Axiso库"></a>Axiso库</h1><p><strong>官方介绍：</strong></p>
<p>Axios 是一个基于 <em><a href=</description>
<content:encoded><![CDATA[<h1 id="Axiso库"><a href="#Axiso库" class="headerlink" title="Axiso库"></a>Axiso库</h1><p><strong>官方介绍：</strong></p><p>Axios 是一个基于 <em><a href="https://javascript.info/promise-basics">promise</a></em> 网络请求库，作用于<a href="https://nodejs.org/"><code>node.js</code></a> 和浏览器中。 它是 <em><a href="https://www.lullabot.com/articles/what-is-an-isomorphic-application">isomorphic</a></em> 的(即同一套代码可以运行在浏览器和node.js中)。在服务端它使用原生 node.js <code>http</code> 模块, 而在客户端 (浏览端) 则使用 XMLHttpRequests。</p><p><strong>axios官方文档：</strong><a href="https://www.axios-http.cn/docs/intro">https://www.axios-http.cn/docs/intro</a></p><h2 id="更新"><a href="#更新" class="headerlink" title="更新"></a>更新</h2><p>2024.5.24 第一次更新，主要学习了一下Axiso的基本用法</p><h2 id="功能特点"><a href="#功能特点" class="headerlink" title="功能特点"></a>功能特点</h2><ul><li><p>在浏览器中发送XMLHttpRequest请求</p><blockquote><p>避免了兼容性问题,fech是存在兼容性问题的</p></blockquote></li><li><p>在node.js中发送http请求</p><blockquote><p>不需要关心在不同的环境用不同的API，axiso会自动识别环境，在不同的环境下用的都是同一个API</p></blockquote></li><li><p>支持 <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise">Promise</a> API</p></li><li><p>拦截请求和响应</p></li><li><p>转换请求和响应数据</p></li><li><p>取消请求</p></li><li><p>超时处理</p></li><li><p>查询参数序列化支持嵌套项处理</p></li><li><p>自动将请求体序列化为：</p><ul><li>JSON (<code>application/json</code>)</li><li>Multipart / FormData (<code>multipart/form-data</code>)</li><li>URL encoded form (<code>application/x-www-form-urlencoded</code>)</li></ul></li><li><p>将 HTML Form 转换成 JSON 进行请求</p></li><li><p>自动转换JSON数据</p></li><li><p>获取浏览器和 node.js 的请求进度，并提供额外的信息（速度、剩余时间）</p></li><li><p>为 node.js 设置带宽限制</p></li></ul><h2 id="安装"><a href="#安装" class="headerlink" title="安装"></a>安装</h2><blockquote><p>npm install axios</p></blockquote><h2 id="在需要使用的js文件中引入axios"><a href="#在需要使用的js文件中引入axios" class="headerlink" title="在需要使用的js文件中引入axios"></a>在需要使用的js文件中引入axios</h2><blockquote><p>import axios from ‘axios’</p></blockquote><h2 id="axios请求方法"><a href="#axios请求方法" class="headerlink" title="axios请求方法"></a>axios请求方法</h2><h3 id="config请求配置"><a href="#config请求配置" class="headerlink" title="config请求配置"></a>config请求配置</h3><ul><li><p>url： <code>url</code> 是用于请求的服务器 URL</p><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">url</span>: <span class="string">'/user'</span>,</span><br></pre></td></tr></table></figure></li><li><p>method：<code>method</code> 是创建请求时使用的方法</p><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">method</span>: <span class="string">'get'</span>, <span class="comment">// 默认值</span></span><br></pre></td></tr></table></figure></li><li><p>baseURL： <code>baseURL</code> 将自动加在 <code>url</code> 前面，除非 <code>url</code> 是一个绝对 URL。<br>它可以通过设置一个 <code>baseURL</code> 便于为 axios 实例的方法传递相对 URL</p><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// `baseURL` 将自动加在 `url` 前面，除非 `url` 是一个绝对 URL。</span></span><br><span class="line"> <span class="comment">// 它可以通过设置一个 `baseURL` 便于为 axios 实例的方法传递相对 URL</span></span><br><span class="line"> <span class="attr">baseURL</span>: <span class="string">'https://some-domain.com/api/'</span>,</span><br></pre></td></tr></table></figure></li><li><p>transformRequest： <code>transformRequest</code> 允许在向服务器发送前，修改请求数据。</p><ul><li>它只能用于 ‘PUT’, ‘POST’ 和 ‘PATCH’ 这几个请求方法。</li><li>数组中最后一个函数必须返回一个字符串， 一个Buffer实例，ArrayBuffer，FormData，或 Stream。</li><li>你可以修改请求头。</li></ul><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">transformRequest</span>: [<span class="keyword">function</span> (<span class="params">data, headers</span>) {</span><br><span class="line"> <span class="comment">// 对发送的 data 进行任意转换处理</span></span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> data;</span><br><span class="line"> }],</span><br></pre></td></tr></table></figure></li><li><p>transformResponse：<code>transformResponse</code> 在传递给 then/catch 前，允许修改响应数据</p><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">transformResponse</span>: [<span class="keyword">function</span> (<span class="params">data</span>) {</span><br><span class="line"> <span class="comment">// 对接收的 data 进行任意转换处理</span></span><br><span class="line"> <span class="keyword">return</span> data;</span><br><span class="line"> }],</span><br></pre></td></tr></table></figure></li><li><p>自定义请求头</p><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">headers</span>: {<span class="string">'X-Requested-With'</span>: <span class="string">'XMLHttpRequest'</span>},</span><br></pre></td></tr></table></figure></li><li><p>params：<code>params</code> 是与请求一起发送的 URL 参数，必须是一个简单对象或 URLSearchParams 对象</p><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">params</span>: {</span><br><span class="line"> <span class="attr">ID</span>: <span class="number">12345</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure></li><li><p>paramsSerializer：<code>paramsSerializer</code>是可选方法，主要用于序列化<code>params</code></p><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">paramsSerializer</span>: <span class="keyword">function</span> (<span class="params">params</span>) {</span><br><span class="line"> <span class="keyword">return</span> <span class="title class_">Qs</span>.<span class="title function_">stringify</span>(params, {<span class="attr">arrayFormat</span>: <span class="string">'brackets'</span>})</span><br><span class="line"> },</span><br></pre></td></tr></table></figure></li><li><p>data：<code>data</code> 是作为请求体被发送的数据</p><ul><li>仅适用 ‘PUT’, ‘POST’, ‘DELETE 和 ‘PATCH’ 请求方法</li><li>在没有设置 <code>transformRequest</code> 时，则必须是以下类型之一:<ul><li>string, plain object, ArrayBuffer, ArrayBufferView, URLSearchParams</li><li>浏览器专属: FormData, File, Blob</li><li>Node 专属: Stream, Buffer</li></ul></li></ul></li></ul><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">data</span>: {</span><br><span class="line"> <span class="attr">firstName</span>: <span class="string">'Fred'</span></span><br><span class="line">},</span><br></pre></td></tr></table></figure><ul><li>timeout：<code>timeout</code> 指定请求超时的毫秒数。</li></ul><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 如果请求时间超过 `timeout` 的值，则请求会被中断</span></span><br><span class="line"><span class="attr">timeout</span>: <span class="number">1000</span>, <span class="comment">// 默认值是 `0` (永不超时)</span></span><br></pre></td></tr></table></figure><ul><li><p>withCredentials：<code>withCredentials</code> 表示跨域请求时是否需要使用凭证</p><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">withCredentials</span>: <span class="literal">false</span>, <span class="comment">// default</span></span><br></pre></td></tr></table></figure></li><li><p>adapter：<code>adapter</code> 允许自定义处理请求，这使测试更加容易。</p><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//返回一个 promise 并提供一个有效的响应</span></span><br><span class="line"><span class="attr">adapter</span>: <span class="keyword">function</span> (<span class="params">config</span>) {</span><br><span class="line"> <span class="comment">/* ... */</span></span><br><span class="line">},</span><br></pre></td></tr></table></figure></li><li><p>responseEncoding：<code>responseEncoding</code> 表示用于解码响应的编码 (Node.js 专属)</p><blockquote><p>注意：忽略 <code>responseType</code> 的值为 ‘stream’，或者是客户端请求</p></blockquote></li></ul><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">responseEncoding</span>: <span class="string">'utf8'</span>, <span class="comment">// 默认值</span></span><br></pre></td></tr></table></figure><p>更多参数，查询：<a href="https://www.axios-http.cn/docs/req_config">https://www.axios-http.cn/docs/req_config</a></p><h3 id="axios"><a href="#axios" class="headerlink" title="axios"></a>axios</h3><p><code>axios(config)</code></p><h5 id="axios-config-——post请求"><a href="#axios-config-——post请求" class="headerlink" title="axios(config)——post请求"></a>axios(config)——<strong>post请求</strong></h5><figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 发起一个post请求</span></span><br><span class="line"><span class="title function_">axios</span>({</span><br><span class="line"> <span class="attr">method</span>: <span class="string">'post'</span>,</span><br><span class="line"> <span class="attr">url</span>: <span class="string">'/user/12345'</span>,</span><br><span class="line"> <span class="attr">data</span>: {</span><br><span class="line"> <span class="attr">firstName</span>: <span class="string">'Fred'</span>,</span><br><span class="line"> <span class="attr">lastName</span>: <span class="string">'Flintstone'</span></span><br><span class="line"> }</span><br><span class="line">});</span><br></pre></td></tr></table></figure><h5 id="axios-config-——get请求"><a href="#axios-config-——get请求" class="headerlink" title="axios(config)——get请求"></a>axios(config)——<strong>get请求</strong></h5><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 在 node.js 用GET请求获取远程图片</span></span><br><span class="line"><span class="title function_">axios</span>({</span><br><span class="line"> <span class="attr">method</span>: <span class="string">'get'</span>,</span><br><span class="line"> <span class="attr">url</span>: <span class="string">'http://bit.ly/2mTM3nY'</span>,</span><br><span class="line"> <span class="attr">responseType</span>: <span class="string">'stream'</span></span><br><span class="line">})</span><br><span class="line"> .<span class="title function_">then</span>(<span class="keyword">function</span> (<span class="params">response</span>) {</span><br><span class="line"> response.<span class="property">data</span>.<span class="title function_">pipe</span>(fs.<span class="title function_">createWriteStream</span>(<span class="string">'ada_lovelace.jpg'</span>))</span><br><span class="line"> });</span><br></pre></td></tr></table></figure><h5 id="axios-url-config"><a href="#axios-url-config" class="headerlink" title="axios(url[, config])"></a>axios(url[, config])</h5><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 发起一个 GET 请求 (默认请求方式)</span></span><br><span class="line"><span class="title function_">axios</span>(<span class="string">'/user/12345'</span>);</span><br></pre></td></tr></table></figure><h3 id="请求别名"><a href="#请求别名" class="headerlink" title="请求别名"></a>请求别名</h3><h5 id="axios-request-config"><a href="#axios-request-config" class="headerlink" title="axios.request(config)"></a>axios.request(config)<a href="https://www.axios-http.cn/docs/api_intro#axiosrequestconfig"></a></h5><h5 id="axios-get-url-config"><a href="#axios-get-url-config" class="headerlink" title="axios.get(url[, config])"></a>axios.get(url[, config])<a href="https://www.axios-http.cn/docs/api_intro#axiosgeturl-config"></a></h5><h5 id="axios-delete-url-config"><a href="#axios-delete-url-config" class="headerlink" title="axios.delete(url[, config])"></a>axios.delete(url[, config])<a href="https://www.axios-http.cn/docs/api_intro#axiosdeleteurl-config"></a></h5><h5 id="axios-head-url-config"><a href="#axios-head-url-config" class="headerlink" title="axios.head(url[, config])"></a>axios.head(url[, config])<a href="https://www.axios-http.cn/docs/api_intro#axiosheadurl-config"></a></h5><h5 id="axios-options-url-config"><a href="#axios-options-url-config" class="headerlink" title="axios.options(url[, config])"></a>axios.options(url[, config])<a href="https://www.axios-http.cn/docs/api_intro#axiosoptionsurl-config"></a></h5><h5 id="axios-post-url-data-config"><a href="#axios-post-url-data-config" class="headerlink" title="axios.post(url[, data[, config]])"></a>axios.post(url[, data[, config]])<a href="https://www.axios-http.cn/docs/api_intro#axiosposturl-data-config"></a></h5><h5 id="axios-put-url-data-config"><a href="#axios-put-url-data-config" class="headerlink" title="axios.put(url[, data[, config]])"></a>axios.put(url[, data[, config]])<a href="https://www.axios-http.cn/docs/api_intro#axiosputurl-data-config"></a></h5><h5 id="axios-patch-url-data-config"><a href="#axios-patch-url-data-config" class="headerlink" title="axios.patch(url[, data[, config]])"></a>axios.patch(url[, data[, config]])<a href="https://www.axios-http.cn/docs/api_intro#axiospatchurl-data-config"></a></h5><h5 id="axios-postForm-url-data-config"><a href="#axios-postForm-url-data-config" class="headerlink" title="axios.postForm(url[, data[, config]])"></a>axios.postForm(url[, data[, config]])<a href="https://www.axios-http.cn/docs/api_intro#axiospostformurl-data-config"></a></h5><h5 id="axios-putForm-url-data-config"><a href="#axios-putForm-url-data-config" class="headerlink" title="axios.putForm(url[, data[, config]])"></a>axios.putForm(url[, data[, config]])<a href="https://www.axios-http.cn/docs/api_intro#axiosputformurl-data-config"></a></h5><h5 id="axios-patchForm-url-data-config"><a href="#axios-patchForm-url-data-config" class="headerlink" title="axios.patchForm(url[, data[, config]])"></a>axios.patchForm(url[, data[, config]])</h5><h3 id="常用的两个"><a href="#常用的两个" class="headerlink" title="常用的两个"></a>常用的两个</h3><h4 id="axios-get"><a href="#axios-get" class="headerlink" title="axios.get"></a>axios.get</h4><h4 id="axios-post"><a href="#axios-post" class="headerlink" title="axios.post"></a>axios.post</h4><p>Url:请求地址</p><p>data：请求体</p><p>config：配置</p><h3 id=""><a href="#" class="headerlink" title=""></a></h3>]]></content:encoded>
<category domain="http://shiff.top/tags/Axios/">Axios</category>
<comments>http://shiff.top/2024/05/24/Axios%E5%AD%A6%E4%B9%A0/#disqus_thread</comments>
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<title>vscode快捷键(mac中)</title>
<link>http://shiff.top/2024/05/23/vscode%E5%BF%AB%E6%8D%B7%E9%94%AE/</link>
<guid>http://shiff.top/2024/05/23/vscode%E5%BF%AB%E6%8D%B7%E9%94%AE/</guid>
<pubDate>Thu, 23 May 2024 02:38:13 GMT</pubDate>
<description><h1 id="vscode快捷键-mac中"><a href="#vscode快捷键-mac中" class="headerlink" title="vscode快捷键(mac中)"></a>vscode快捷键(mac中)</h1><h3 id="缩进"><a href="#缩</description>
<content:encoded><![CDATA[<h1 id="vscode快捷键-mac中"><a href="#vscode快捷键-mac中" class="headerlink" title="vscode快捷键(mac中)"></a>vscode快捷键(mac中)</h1><h3 id="缩进"><a href="#缩进" class="headerlink" title="缩进"></a>缩进</h3><p>选中需要缩进的行，按住 <code>Command+]</code> 键。</p>]]></content:encoded>
<category domain="http://shiff.top/tags/%E5%AE%9E%E8%B7%B5/">实践</category>
<comments>http://shiff.top/2024/05/23/vscode%E5%BF%AB%E6%8D%B7%E9%94%AE/#disqus_thread</comments>
</item>
<item>
<title>Vue-父子组件的通信</title>
<link>http://shiff.top/2024/05/18/Vue-%E7%88%B6%E5%AD%90%E7%BB%84%E4%BB%B6%E7%9A%84%E9%80%9A%E4%BF%A1/</link>
<guid>http://shiff.top/2024/05/18/Vue-%E7%88%B6%E5%AD%90%E7%BB%84%E4%BB%B6%E7%9A%84%E9%80%9A%E4%BF%A1/</guid>
<pubDate>Sat, 18 May 2024 04:38:30 GMT</pubDate>
<description><h1 id="Vue-父子组件的通信"><a href="#Vue-父子组件的通信" class="headerlink" title="Vue-父子组件的通信"></a>Vue-父子组件的通信</h1><p>在 Vue.js 中，父子组件之间的通信可以通过 props 和 e</description>
<content:encoded><![CDATA[<h1 id="Vue-父子组件的通信"><a href="#Vue-父子组件的通信" class="headerlink" title="Vue-父子组件的通信"></a>Vue-父子组件的通信</h1><p>在 Vue.js 中，父子组件之间的通信可以通过 props 和 events 来实现。下面分别介绍了 props 和 events 的用法：</p><h3 id="使用-Props（父传子）："><a href="#使用-Props（父传子）：" class="headerlink" title="使用 Props（父传子）："></a>使用 Props（父传子）：</h3><ul><li>父组件可以通过 props 向子组件传递数据。</li><li>在子组件中，props 是响应式的，即当父组件的数据发生变化时，子组件会自动更新。</li><li>父组件通过在子组件上使用属性绑定的方式传递数据。</li></ul><p><strong>父组件：</strong></p><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><template></span><br><span class="line"> <ChildComponent :message="parentMessage" /></span><br><span class="line"></template></span><br><span class="line"></span><br><span class="line"><script></span><br><span class="line">import ChildComponent from './ChildComponent.vue';</span><br><span class="line"></span><br><span class="line">export default {</span><br><span class="line"> data() {</span><br><span class="line"> return {</span><br><span class="line"> parentMessage: 'Hello from Parent',</span><br><span class="line"> };</span><br><span class="line"> },</span><br><span class="line"> components: {</span><br><span class="line"> ChildComponent,</span><br><span class="line"> },</span><br><span class="line">};</span><br><span class="line"></script></span><br></pre></td></tr></table></figure><p><strong>子组件：</strong></p><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><template></span><br><span class="line"> <div>{{ message }}</div></span><br><span class="line"></template></span><br><span class="line"></span><br><span class="line"><script></span><br><span class="line">export default {</span><br><span class="line"> props: ['message'],</span><br><span class="line">};</span><br><span class="line"></script></span><br></pre></td></tr></table></figure><h3 id="使用-Events（子传父）："><a href="#使用-Events（子传父）：" class="headerlink" title="使用 Events（子传父）："></a>使用 Events（子传父）：</h3><ul><li>子组件可以通过 events 向父组件发送消息。</li><li>在子组件中使用 <code>$emit</code> 方法触发一个自定义事件，并传递数据。</li><li>父组件通过在子组件上监听自定义事件来接收子组件发送的消息。</li></ul><p><strong>父组件：</strong></p><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><template></span><br><span class="line"> <ChildComponent @child-event="handleChildEvent" /></span><br><span class="line"></template></span><br><span class="line"></span><br><span class="line"><script></span><br><span class="line">import ChildComponent from './ChildComponent.vue';</span><br><span class="line"></span><br><span class="line">export default {</span><br><span class="line"> methods: {</span><br><span class="line"> handleChildEvent(data) {</span><br><span class="line"> console.log('Received data from child:', data);</span><br><span class="line"> },</span><br><span class="line"> },</span><br><span class="line"> components: {</span><br><span class="line"> ChildComponent,</span><br><span class="line"> },</span><br><span class="line">};</span><br><span class="line"></script></span><br></pre></td></tr></table></figure><p><strong>子组件：</strong></p><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><template></span><br><span class="line"> <button @click="sendMessage">Send Message to Parent</button></span><br><span class="line"></template></span><br><span class="line"></span><br><span class="line"><script></span><br><span class="line">export default {</span><br><span class="line"> methods: {</span><br><span class="line"> sendMessage() {</span><br><span class="line"> this.$emit('child-event', 'Hello from Child');</span><br><span class="line"> },</span><br><span class="line"> },</span><br><span class="line">};</span><br><span class="line"></script></span><br></pre></td></tr></table></figure><p>通过 props 和 events，父子组件之间可以方便地进行通信，实现数据的传递和交互。</p>]]></content:encoded>
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