//判断页面加载完毕document.onreadystatechange = function () {    if (document.readyState == "complete") {        //code...    }}//判断是否全为手机String.prototype.isMobile = function () {    var pattern = /^0{0,1}(13[0-9]|14[6|7]|15[0-3]|15[5-9]|18[0-3]|18[5-9])[0-9]{8}$/;    return pattern.test(this);}//判断是否全为中文String.prototype.isChinese = function () {    var pattern = /^[\u4e00-\u9fa5]+$/;    return pattern.test(this);}//判断是否全为英文String.prototype.isEnglish = function () {    var pattern = /^[a-zA-Z]+$/;    return pattern.test(this);}//判断是否为空String.prototype.isEmpty = function () {    var _this = this;    if (_this == "")        return true;}//清除空格String.prototype.Trim = function () {    return this.replace(/(^\s*)|(\s*$)/g, "");}/* 检测级数中是否包含此项var ar = ["a", "b"];if (ar.contains("a"))alert("true");  //结果：true*/Array.prototype.contains = function (element) {    for (var i = 0; i < this.length; i++) {        if (this[i] == element) {            return true;        }    }    return false;}