//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; }