js对特殊字符转义 时间格式化 获取URL参数

/*特殊字符转义*/function replace_html(str) {var str = str.toString().replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, '&quot;');return str;}/**时间格式化*例子：time = new Date().Format("yyyy-MM-dd hh:mm:ss");*/Date.prototype.Format = function (result) {var o = {"M+": this.getMonth() + 1, //month"D+": this.getDate(), //day"h+": this.getHours(), //hours"m+": this.getMinutes(), //minutes"s+": this.getSeconds(), //seconds"q+": Math.floor((this.getMonth() + 3) / 3), // season"S": this.getMilliseconds() //milliseconds};if (/(Y+)/.test(result)) {result = result.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));}for (var k in o){if (new RegExp("(" + k + ")").test(result)) {result = result.replace(RegExp.$1, (RegExp.$1.length === 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));}}return result;};/**获取URL参数*/function getQueryString(key){var reg = new RegExp("(^|&)"+ key +"=([^&]*)(&|$)");var r = window.location.search.substr(1).match(reg);if(r!=null){return unescape(r[2]);}return null;}