diff --git a/README.md b/README.md
index 1792be9..f51b870 100644
--- a/README.md
+++ b/README.md
@@ -97,7 +97,7 @@ console.log(validNumber('1.2.')); // 1.20
 
 `lib` 目录下，每一个目录是一个函数类型集合。
 
-每个目录下，不能再创建目录，只能创建函数文件。
+每个目录下，不能再创建目录，只能创建函数文件。 
 
 函数名称尽量简短且清楚地表达函数的作用。
 
@@ -129,14 +129,3 @@ console.log(validNumber('1.2.')); // 1.20
 
 1. 每个注册用户可以免费领取一个永久注册码（登录自动领取）。
 2. 每个贡献者可以额外领取一个（私聊我即可）。
-
-### 贡献者
-
-<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
-<!-- prettier-ignore-start -->
-<!-- markdownlint-disable -->
-
-<!-- markdownlint-restore -->
-<!-- prettier-ignore-end -->
-
-<!-- ALL-CONTRIBUTORS-LIST:END -->
diff --git a/lib/array/countOccurrences.js b/lib/array/countOccurrences.js
index 1473cef..9716fff 100644
--- a/lib/array/countOccurrences.js
+++ b/lib/array/countOccurrences.js
@@ -2,8 +2,9 @@
  * 统计数组中各项出现的次数
  * @author 橙某人 <https://github.com/ydydydq>
  * @category 数组
+ * @alias yd_array_countOccurrences
  * @param {Array} array 任意一维数组
- * @returns {Object} 返回以每项为key，次数为value的对象
+ * @returns {object} 返回以每项为key，次数为value的对象
  *
  * @example
  * console.log(yd_array_countOccurrences([1, 1, 2, 3, 3, 4, 4, 4])); // {1: 2, 2: 1, 3: 2, 4: 3}
@@ -11,4 +12,16 @@
  * @example
  * console.log(yd_array_countOccurrences(['a', 'a', 'bb', 'abc', 'fff', 'fff', '橙', '橙'])); // {a: 2, bb: 1, abc: 1, fff: 2, 橙: 2}
  */
-export default (arr) => arr.reduce((prev, curr) => ((prev[curr] = ++prev[curr] || 1), prev), {});
+export default (array) => {
+    const occurrences = {};
+    for (let i = 0; i < array.length; i++) {
+        const element = array[i];
+        if (occurrences[element]) {
+            occurrences[element]++;
+        }
+        else {
+            occurrences[element] = 1;
+        }
+    }
+    return occurrences;
+};
diff --git a/lib/array/diffBoth.js b/lib/array/diffBoth.js
index 884392b..42e6207 100644
--- a/lib/array/diffBoth.js
+++ b/lib/array/diffBoth.js
@@ -2,6 +2,7 @@
  * 数组的差集
  * @author 陈随易 <https://chensuiyi.me>
  * @category 数组
+ * @alias yd_array_diffBoth
  * @param {Array} arr1 数组1
  * @param {Array} arr2 数组2
  * @returns Array 数组的差集
diff --git a/lib/array/diffFirst.js b/lib/array/diffFirst.js
index bd84c43..5cfa7d1 100644
--- a/lib/array/diffFirst.js
+++ b/lib/array/diffFirst.js
@@ -2,6 +2,7 @@
  * 取第一个数组的差集
  * @author 陈随易 <https://chensuiyi.me>
  * @category 数组
+ * @alias yd_array_diffFirst
  * @param {Array} arr1 数组1
  * @param {Array} arr2 数组2
  * @returns {Array} 返回第一个数组中跟第二个数组不同的值
@@ -9,7 +10,7 @@
 export default (arr1, arr2) => {
     const set1 = new Set(arr1);
     const set2 = new Set(arr2);
-    const uniqueElements = new Set([...set1].filter((x) => !set2.has(x)));
+    const uniqueElements = new Set([...set1].filter(x => !set2.has(x)));
 
     return Array.from(uniqueElements);
-};
+}
diff --git a/lib/array/findIndex.js b/lib/array/findIndex.js
index 875bd7e..b09d4a7 100644
--- a/lib/array/findIndex.js
+++ b/lib/array/findIndex.js
@@ -2,16 +2,17 @@
  * 查找数组中匹配的索引
  * @author 陈随易 <https://chensuiyi.me>
  * @category 数组
+ * @alias yd_array_findIndex
  * @param {Array} array 数组
- * @param {String} field 要查找的字段
- * @param {String} value 该字段的值
- * @returns {Number} 返回匹配的索引
+ * @param {string} field 要查找的字段
+ * @param {string} value 该字段的值
+ * @returns {number} 返回匹配的索引
  */
 export default (array, field, value) => {
     let result = null;
     for (const [index, item] of array.entries()) {
-        for (let prop in item) {
-            if (item.hasOwnProperty(prop)) {
+        for (const prop in item) {
+            if (Object.prototype.hasOwnProperty.call(item, prop)) {
                 if (prop === field && item[prop] === value) {
                     result = index;
                     break;
diff --git a/lib/array/findObj.js b/lib/array/findObj.js
index 1905bb3..b6925b6 100644
--- a/lib/array/findObj.js
+++ b/lib/array/findObj.js
@@ -2,16 +2,17 @@
  * 查找数组中匹配的值
  * @author 陈随易 <https://chensuiyi.me>
  * @category 数组
- * @param {Array} array 数组对象
- * @param {String} field 要查找的属性
+ * @alias yd_array_findObj
+ * @param {Array} arrObj 数组对象
+ * @param {string} field 要查找的属性
  * @param {Any} value 属性的值
- * @returns {Object} 返回匹配的对象
+ * @returns {object} 返回匹配的对象
  */
-export default (array, field, value) => {
+export default (arrObj, field, value) => {
     let result = {};
-    for (let item of array) {
-        for (let prop in item) {
-            if (item.hasOwnProperty(prop)) {
+    for (const item of arrObj) {
+        for (const prop in item) {
+            if (Object.prototype.hasOwnProperty.call(item, prop)) {
                 if (prop === field && item[prop] === value) {
                     result = item;
                     break;
diff --git a/lib/array/flatten.js b/lib/array/flatten.js
index 991e0c6..dcb0353 100644
--- a/lib/array/flatten.js
+++ b/lib/array/flatten.js
@@ -2,22 +2,24 @@
  * 将多维数组拍平为一维数组
  * @author WZBBiao <https://github.com/WZBbiao>
  * @category 数组
- * @param {Array} array - 需要拍平的数组
+ * @alias yd_array_flatten
+ * @param {Array} arr - 需要拍平的数组
  * @returns {Array} - 拍平后的数组
  * @example
  * console.log(yd_array_flatten([1, [2, [3, [4]], 5]])); // [1, 2, 3, 4, 5]
  */
-export default (array) => {
+export default (arr) => {
     const result = [];
     const flatten = (arr) => {
         arr.forEach((item) => {
             if (Array.isArray(item)) {
                 flatten(item);
-            } else {
+            }
+            else {
                 result.push(item);
             }
         });
-    };
-    flatten(array);
+    }
+    flatten(arr);
     return result;
-};
+}
diff --git a/lib/array/groupBy.js b/lib/array/groupBy.js
index 5d903e5..f601afe 100644
--- a/lib/array/groupBy.js
+++ b/lib/array/groupBy.js
@@ -2,9 +2,10 @@
  * 数组数据分组
  * @author 陈随易 <https://chensuiyi.me>
  * @category 数组
+ * @alias yd_array_groupBy
  * @param {Array} array 数组
- * @param {String | Function} key 分组的字段或函数
- * @returns {Object} 返回按某字段或函数分组后的对象
+ * @param {string | Function} key 分组的字段或函数
+ * @returns {object} 返回按某字段或函数分组后的对象
  */
 export default (array, key) => {
     const result = new Map();
@@ -13,7 +14,8 @@ export default (array, key) => {
 
         if (typeof key === 'string') {
             groupKey = item[key];
-        } else if (typeof key === 'function') {
+        }
+        else if (typeof key === 'function') {
             groupKey = key(item);
         }
 
diff --git a/lib/array/keyBy.js b/lib/array/keyBy.js
index 6302766..7ec3303 100644
--- a/lib/array/keyBy.js
+++ b/lib/array/keyBy.js
@@ -2,14 +2,15 @@
  * 数组按key排序
  * @author 陈随易 <https://chensuiyi.me>
  * @category 数组
+ * @alias yd_array_keyBy
  * @param {Array} array 数组
- * @param {String} field 映射字段
- * @returns {Object} 返回根据字段映射的对象
+ * @param {string} field 映射字段
+ * @returns {object} 返回根据字段映射的对象
  */
 export default (array, field) => {
     const result = {};
     array.forEach((item) => {
         result[item[field]] = item;
-    });
+    })
     return result;
 };
diff --git a/lib/array/paging.js b/lib/array/paging.js
index e36b8cb..bf2a927 100644
--- a/lib/array/paging.js
+++ b/lib/array/paging.js
@@ -2,12 +2,13 @@
  * 对数组进行分页
  * @author XiaoXinYo
  * @category 数组
+ * @alias yd_array_paging
  * @param {Array} array 数组
  * @param {number} page_size 每页数量
  * @returns {Array} 返回已分好的数组
  */
 export default (array, page_size) => {
-    let result = [];
+    const result = []
     for (let i = 0; i < array.length; i += page_size) {
         result.push(array.slice(i, i + page_size));
     }
diff --git a/lib/array/shuffle.js b/lib/array/shuffle.js
index 4c2eb54..ea8ba2e 100644
--- a/lib/array/shuffle.js
+++ b/lib/array/shuffle.js
@@ -2,6 +2,7 @@
  * 数组随机排序(俗称洗牌)
  * @author 生命过客 <739694218@qq.com>
  * @category 数组
+ * @alias yd_array_shuffle
  * @param {Array} array 数组
  * @returns {Array} 返回随机排序后的数组
  */
diff --git a/lib/array/sortBy.js b/lib/array/sortBy.js
index 6f23f2b..ca80cf0 100644
--- a/lib/array/sortBy.js
+++ b/lib/array/sortBy.js
@@ -1,6 +1,6 @@
 // >>> HELPERS <<<
 
-const castComparer = (comparer) => (a, b, order) => comparer(a, b, order) * order;
+const castComparer = comparer => (a, b, order) => comparer(a, b, order) * order;
 
 const unpackObjectSorter = function (sortByObj) {
     const { asc, desc } = sortByObj || {};
@@ -22,10 +22,12 @@ const multiPropertySorterProvider = function (defaultComparer) {
         if (typeof sortBy === 'string') {
             valA = a[sortBy];
             valB = b[sortBy];
-        } else if (typeof sortBy === 'function') {
+        }
+        else if (typeof sortBy === 'function') {
             valA = sortBy(a);
             valB = sortBy(b);
-        } else {
+        }
+        else {
             const objectSorterConfig = unpackObjectSorter(sortBy);
             return multiPropertySorter(objectSorterConfig.sortBy, sortByArr, depth, objectSorterConfig.order, objectSorterConfig.comparer || defaultComparer, a, b);
         }
@@ -38,7 +40,7 @@ const multiPropertySorterProvider = function (defaultComparer) {
 
         return equality;
     };
-};
+}
 
 function getSortStrategy(sortBy, comparer, order) {
     // Flat array sorter
@@ -95,29 +97,34 @@ function createNewSortInstance(opts) {
             },
             by(sortBy) {
                 return sortArray(1, arrayToSort.slice(), sortBy, comparer);
-            }
-        };
+            },
+        }
     };
 }
 
-const defaultComparer = (a, b, order) => {
-    if (a == null) return order;
-    if (b == null) return -order;
+function defaultComparer(a, b, order) {
+    if (a == null)
+        return order;
+    if (b == null)
+        return -order;
 
     if (typeof a !== typeof b) {
         if (typeof a < typeof b) {
             return -1;
-        } else {
+        }
+        else {
             return 1;
         }
     }
 
-    if (a < b) return -1;
-    if (a > b) return 1;
+    if (a < b)
+        return -1;
+    if (a > b)
+        return 1;
 
     return 0;
-};
+}
 
 export default createNewSortInstance({
-    comparer: defaultComparer
-});
+    comparer: defaultComparer,
+})
diff --git a/lib/array/sumBy.js b/lib/array/sumBy.js
index 7611846..b8a4714 100644
--- a/lib/array/sumBy.js
+++ b/lib/array/sumBy.js
@@ -2,14 +2,15 @@
  * 数组求和
  * @author 陈随易 <https://chensuiyi.me>
  * @category 数组
- * @param {Array} array 数组数据
+ * @alias yd_array_sumBy
+ * @param {Array} arr 数组数据
  * @param {Function} iteratee 迭代函数
- * @returns {Number} 返回求和值
+ * @returns {number} 返回求和值
  */
-export default (array, iteratee) => {
+export default (arr, iteratee) => {
     let sum = 0;
-    for (let i = 0; i < array.length; i++) {
-        sum += iteratee(array[i]);
+    for (let i = 0; i < arr.length; i++) {
+        sum += iteratee(arr[i]);
     }
     return sum;
 };
diff --git a/lib/array/uniqWith.js b/lib/array/uniqWith.js
index 4a64bf4..75ed50e 100644
--- a/lib/array/uniqWith.js
+++ b/lib/array/uniqWith.js
@@ -2,6 +2,7 @@
  * 数组去重
  * @author 陈随易 <https://chensuiyi.me>
  * @category 数组
+ * @alias yd_array_uniqWith
  * @param {Array} array 数组数据
  * @param {Function} comparator 比较函数
  * @returns {Array} 返回比较函数去重后的数组
diff --git a/lib/array/unique.js b/lib/array/unique.js
index 49340ea..17bbf40 100644
--- a/lib/array/unique.js
+++ b/lib/array/unique.js
@@ -2,6 +2,7 @@
  * 数组去重
  * @author 陈随易 <https://chensuiyi.me>
  * @category 数组
+ * @alias yd_array_unique
  * @param {Array} array 数组数据
  * @returns {Array} 返回去重后的数组
  */
diff --git a/lib/browser/exitFullScreen.js b/lib/browser/exitFullScreen.js
index 8a99922..a1d95ed 100644
--- a/lib/browser/exitFullScreen.js
+++ b/lib/browser/exitFullScreen.js
@@ -2,15 +2,21 @@
  * 退出网页全屏
  * @author 陈随易 <https://chensuiyi.me>
  * @category 浏览器
+ * @alias yd_browser_exitFullScreen
  */
 export default () => {
-    if (document.exitFullscreen) {
-        document.exitFullscreen();
-    } else if (document.msExitFullscreen) {
-        document.msExitFullscreen();
-    } else if (document.mozCancelFullScreen) {
-        document.mozCancelFullScreen();
-    } else if (document.webkitExitFullscreen) {
-        document.webkitExitFullscreen();
+    if (document.fullscreenElement || document.webkitFullscreenElement) {
+        if (document.exitFullscreen) {
+            document.exitFullscreen();
+        }
+        else if (document.msExitFullscreen) {
+            document.msExitFullscreen();
+        }
+        else if (document.mozCancelFullScreen) {
+            document.mozCancelFullScreen();
+        }
+        else if (document.webkitExitFullscreen) {
+            document.webkitExitFullscreen();
+        }
     }
-};
+}
diff --git a/lib/browser/openFullscreen.js b/lib/browser/openFullscreen.js
index f1a7b9e..362b88c 100644
--- a/lib/browser/openFullscreen.js
+++ b/lib/browser/openFullscreen.js
@@ -2,16 +2,20 @@
  * 开启网页全屏
  * @author 陈随易 <https://chensuiyi.me>
  * @category 浏览器
- * @param {String} element 元素
+ * @alias yd_browser_exitFullScreen
+ * @param {string} element 元素
  */
 export default (element) => {
     if (element.requestFullscreen) {
         element.requestFullscreen();
-    } else if (element.mozRequestFullScreen) {
+    }
+    else if (element.mozRequestFullScreen) {
         element.mozRequestFullScreen();
-    } else if (element.msRequestFullscreen) {
+    }
+    else if (element.msRequestFullscreen) {
         element.msRequestFullscreen();
-    } else if (element.webkitRequestFullscreen) {
+    }
+    else if (element.webkitRequestFullscreen) {
         element.webkitRequestFullScreen();
     }
 };
diff --git a/lib/browser/viewTransition.js b/lib/browser/viewTransition.js
index 8765ff9..e722857 100644
--- a/lib/browser/viewTransition.js
+++ b/lib/browser/viewTransition.js
@@ -2,14 +2,16 @@
  * 应用 viewTransition api
  * @author imddc https://github.com/imddc
  * @category 浏览器
+ * @alias yd_browser_viewTransition
  * @param {any} fn 用于触发过渡的函数
  * @summary 应用场景：使用viewTransition进行视图过渡
  */
 export default (fn) => {
+    // eslint-disable-next-line no-undef
     const isSupport = doucment !== undefined && 'startViewTransition' in document;
     if (!isSupport) {
         console.warn('not supported view transition in your broswer');
-        return;
+        return
     }
 
     let promiseResolve;
@@ -18,21 +20,22 @@ export default (fn) => {
     const promise = new Promise((resolve, reject) => {
         promiseResolve = resolve;
         promiseReject = reject;
-    });
+    })
 
     const transition = document.startViewTransition(() => {
         try {
             fn();
             promiseResolve();
-        } catch (e) {
+        }
+        catch (e) {
             console.error(e);
             promiseReject();
         }
         return promise;
-    });
+    })
 
     transition.finished.then(() => {
         promiseResolve = undefined;
         promiseReject = undefined;
-    });
-};
+    })
+}
diff --git a/lib/browser/denyChange.js b/libPend/denyChange.js
similarity index 69%
rename from lib/browser/denyChange.js
rename to libPend/denyChange.js
index 8e617d7..42c26f3 100644
--- a/lib/browser/denyChange.js
+++ b/libPend/denyChange.js
@@ -1,20 +1,22 @@
 /**
  * 浏览器禁止切换页面
+ * @author Nil <https://github.com/Nil-nil-zero>
+ * @category 浏览器
+ * @alias yd_array_uniqWith
  * @param {Function} 函数
  * @param {number} number 切换次数，默认是3次
- * @param {String} msg 切换次数，默认提示内容“切换次数超过限制”
- * @author Nil <https://github.com/Nil-nil-zero>
+ * @param {string} msg 切换次数，默认提示内容“切换次数超过限制”
  * @summary 应用场景：线上考试场景
  */
 
 export default (number, msg) => {
     window.onblur = function () {
         let i = number || 3;
-        i--;
+        i--
         if (i == 0) {
-            let res = msg || '切换次数超过限制';
+            const res = msg || '切换次数超过限制'
             alert(res);
         }
     };
     return window.onblur;
-};
+}
diff --git a/lib/browser/download.js b/libPend/download.js
similarity index 52%
rename from lib/browser/download.js
rename to libPend/download.js
index a1064a5..1bdb74d 100644
--- a/lib/browser/download.js
+++ b/libPend/download.js
@@ -1,45 +1,66 @@
 /**
  * 将字符串、画布元素、图像元素、`Blob`或`File`、`ArrayBuffer`或类型化数组、对象(转为JSON字符串)等下载为文件
- * @param {HTMLCanvasElement|HTMLMediaElement|HTMLImageElement|HTMLSourceElement|HTMLTrackElement|HTMLEmbedElement|HTMLObjectElement|File|Blob|ArrayBuffer|URL|String} content 下载内容/下载链接
- * @param {String} [filename] 文件名 默认使用页面标题
- * @param {Boolean} [isURL] 传入的字符串是否为下载链接。(否则将作为文本内容下载) 默认为`false`
+ * @param {HTMLCanvasElement | HTMLMediaElement | HTMLImageElement | HTMLSourceElement | HTMLTrackElement | HTMLEmbedElement | HTMLObjectElement | File | Blob | ArrayBuffer | URL | string} content 下载内容/下载链接
+ * @param {string} [filename] 文件名 默认使用页面标题
+ * @param {boolean} [isURL] 传入的字符串是否为下载链接。(否则将作为文本内容下载) 默认为`false`
  */
 export default (content, filename = document.title, isURL = 'false') => {
-    if (content === void 0 || content === null) throw new TypeError('无下载内容！');
+    if (content === void 0 || content === null)
+        throw new TypeError('无下载内容！');
     const anchor = document.createElement('a');
     // 将数值类型与布尔类型转为字符串
-    if (typeof content === 'number' || typeof content === 'bigint' || typeof content === 'boolean') return yd_download(String(content), filename);
+    if (typeof content === 'number' || typeof content === 'bigint' || typeof content === 'boolean')
+        return yd_download(String(content), filename);
     if (typeof content === 'string') {
-        if (isURL) anchor.href = content;
+        if (isURL)
+            anchor.href = content;
         // 下载为文本内容
         else return yd_download(new Blob([content]), filename);
     }
     // 对象类型
     else if (typeof content === 'object') {
         // 画布元素转为base64作为下载链接
-        if (content instanceof HTMLCanvasElement) anchor.href = content.toDataURL('image/png');
+        if (content instanceof HTMLCanvasElement) {
+            anchor.href = content.toDataURL('image/png')
+        }
         // 包含src属性的元素直接使用src属性作为下载链接
-        else if (content instanceof HTMLImageElement || content instanceof HTMLMediaElement || content instanceof HTMLSourceElement || content instanceof HTMLTrackElement || content instanceof HTMLEmbedElement) anchor.href = content.src;
+        else if (content instanceof HTMLImageElement || content instanceof HTMLMediaElement || content instanceof HTMLSourceElement || content instanceof HTMLTrackElement || content instanceof HTMLEmbedElement) {
+            anchor.href = content.src
+        }
         // object元素使用data属性作为下载链接
-        else if (content instanceof HTMLObjectElement) anchor.href = content.data;
+        else if (content instanceof HTMLObjectElement) {
+            anchor.href = content.data
+        }
         // File和Blob类型转为url作为下载链接
-        else if (content instanceof Blob) anchor.href = URL.createObjectURL(content);
+        else if (content instanceof Blob) {
+            anchor.href = URL.createObjectURL(content)
+        }
         // ArrayBuffer将转为Blob进行下载
-        else if (content instanceof ArrayBuffer) return yd_download(new Blob([content]), filename);
+        else if (content instanceof ArrayBuffer) {
+            return yd_download(new Blob([content]), filename)
+        }
         // URL对象转为字符串形式
-        else if (content instanceof URL) anchor.href = content.href;
+        else if (content instanceof URL) {
+            anchor.href = content.href
+        }
         // 类型化数组与DataView 将转为ArrayBuffer
-        else if (ArrayBuffer.isView(content)) return yd_download(content.buffer, filename);
+        else if (ArrayBuffer.isView(content)) {
+            return yd_download(content.buffer, filename)
+        }
         else {
             // 尝试转为JSON字符串
             try {
                 return yd_download(new Blob([JSON.stringify(content)]), filename);
-            } catch {
+            }
+            catch {
                 throw new TypeError('对象可能包含循环引用。');
             }
         }
-    } else throw new TypeError('无法处理的类型');
+    }
+    else {
+        throw new TypeError('无法处理的类型')
+    }
     // 设置文件名
     anchor.download = filename;
     anchor.click();
-};
+}