live.js

/**
 * Created by liw on 2017/6/9.
 */
//在浏览器环境下测试任何对象的某个特性是否存在
function isHostMethod(object, property){
    var t = typeof object[property];
    return t == 'function' || (!!(t == 'object' && object[property])) || t == 'unknown';
}
//eg: result = isHostMethod(xhr,"oper"); //true

//兼容IE5
function getElement(id) {
    if(document.getElementById){
        return document.getElementById(id);
    }else if(document.all){
        return document.all[id];
    }else{
        throw new Error("No way to retrieve element")
    }
}

//取得窗口左边和上边的位置
var leftPos = (typeof window.screenLeft == "number") ? window.screenLeft : window.screenX;
var topPos = (typeof window.screenTop == "number") ? window.screenTop : window.screenY;

//JSON排序  .localeCompare("")比较两字符串大小
function createComparisonFunction(propertyName){
    return function (object1,object2) {
        var value1 = object1[propertyName];
        var value2 = object2[propertyName];
        if(value1 < value2){
            return -1;
        }else if(value1 > value2){
            return 1;
        }else {
            return 0;
        }
    }
}
//数字排序
function compare(value1,value2) {
    return value1 - value2;
}
//验证手机
function checkPhone(phone){
    if(!(/^1[34578]\d{9}$/.test(phone))){
        return false;
    }else{
        return true;
    }
}
//身份证号合法性验证
//支持15位和18位身份证号
//支持地址编码、出生日期、校验位验证
function IdentityCodeValid(code) {
    var city={11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江 ",31:"上海",32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",42:"湖北 ",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",51:"四川",52:"贵州",53:"云南",54:"西藏 ",61:"陕西",62:"甘肃",63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外 "};
    var tip = "";
    var pass= true;

    if(!code || !/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[12])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/i.test(code)){
        tip = "身份证号格式错误";
        pass = false;
    }

    else if(!city[code.substr(0,2)]){
        tip = "地址编码错误";
        pass = false;
    }
    else{
        //18位身份证需要验证最后一位校验位
        if(code.length == 18){
            code = code.split('');
            //∑(ai×Wi)(mod 11)
            //加权因子
            var factor = [ 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 ];
            //校验位
            var parity = [ 1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2 ];
            var sum = 0;
            var ai = 0;
            var wi = 0;
            for (var i = 0; i < 17; i++)
            {
                ai = code[i];
                wi = factor[i];
                sum += ai * wi;
            }
            var last = parity[sum % 11];
            if(parity[sum % 11] != code[17]){
                tip = "校验位错误";
                pass =false;
            }
        }
    }
    if(!pass) alert(tip);
    return pass;
}

//查询location中字符串参数
function getQueryStringArgs() {
    var qs = (location.search.length > 0 ? location.search.substring(1) : "");
    var args = {},
        items = qs.length ? qs.split('&'):[],
        item = null,
        name = null,
        value = null,
        i = 0,
        len = items.length;
    for ( i = 0; i < len; i++){
        item = items.split('=');
        name = decodeURIComponent(item[0]);
        value = decodeURIComponent(item[1]);
        if(name.length){
            args[name] = value;
        }
    }
    return args;
}
//date转标准日期格式
function myformatter(date) {
    var y = date.getFullYear();
    var m = date.getMonth() + 1;
    var d = date.getDate();
    return y + '-' + (m < 10 ? ('0' + m) : m) + '-'
        + (d < 10 ? ('0' + d) : d);
}
//字符转date
function myparser(s) {
    if (!s)
        return new Date();
    var ss = (s.split('-'));
    var y = parseInt(ss[0], 10);
    var m = parseInt(ss[1], 10);
    var d = parseInt(ss[2], 10);
    if (!isNaN(y) && !isNaN(m) && !isNaN(d)) {
        return new Date(y, m - 1, d);
    } else {
        return new Date();
    }
}
//验证正则
function isRegExp (v) {
  return toString.call(v) === '[object RegExp]'
}

//转字符串
function _toString (val) {
  return val == null
    ? ''
    : typeof val === 'object'
      ? JSON.stringify(val, null, 2)
      : String(val)
}

//转数字
function toNumber (val) {
  var n = parseFloat(val);
  return isNaN(n) ? val : n
}
//删除数组中元素
function remove (arr, item) {
  if (arr.length) {
    var index = arr.indexOf(item);
    if (index > -1) {
      return arr.splice(index, 1)
    }
  }
}
//简单的bind，比原生快
function bind (fn, ctx) {
  function boundFn (a) {
    var l = arguments.length;
    return l
      ? l > 1
        ? fn.apply(ctx, arguments)
        : fn.call(ctx, a)
      : fn.call(ctx)
  }
  boundFn._length = fn.length;
  return boundFn
}
//加载script
function loadScript(url){
	var script = document.createElement("script");
	script.type = "text/javascript";
	script.src = url;
	document.body.appendChild(script);
}
//加载Style,通过css文件
function loadStyles(url){
	var link = document.createElement("link");
	link.rel = "stylesheet";
	link.type = "text/css";
	link.href = url;
	var head = document.getElementsByTagName("head")[0];
	head.appendChild(link);
}
//加载css（IE中不能访问style子节点）
function loadStyleString(css){
	var style = document.createElement("style");
	style.type = "text/css";
	try{
		style.appendChild(document.createTextNode(css));
	}catch(ex){
		style.styleSheet.cssText = css;//IE
	}
	var head = document.getElementsByTagName("head")[0];
	head.appendChild(style);
}
//复制
function copy(value) {
        const aux = document.createElement('input');
        aux.setAttribute('value', value);
        document.body.appendChild(aux);
        aux.select();
        document.execCommand('copy');
        document.body.removeChild(aux);
}