转载自：http://blog.csdn.net/u014079773/article/details/52411299
js方法将系统时间转换为字符串案例：
[html] view plain copy <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>js将当前时间转换为字符串日期</title> <script type="text/javascript" src="jquery-1.11.1.min.js"></script> <script type="text/javascript"> $(function () { $("#clickDate").click(function () { var date=new Date(); alert("date:"+date); dateStr=dateToString(date); alert("dateStr:"+dateStr); }); }); </script> <script type="text/javascript"> function dateToString(now){ var year = now.getFullYear(); var month =(now.getMonth() + 1).toString(); var day = (now.getDate()).toString(); var hour = (now.getHours()).toString(); var minute = (now.getMinutes()).toString(); var second = (now.getSeconds()).toString(); if (month.length == 1) { month = "0" + month; } if (day.length == 1) { day = "0" + day; } if (hour.length == 1) { hour = "0" + hour; } if (minute.length == 1) { minute = "0" + minute; } if (second.length == 1) { second = "0" + second; } var dateTime = year + "-" + month + "-" + day +" "+ hour +":"+minute+":"+second; return dateTime; } </script> </head> <body> <button id="clickDate">系统当前时间转换为字符串</button> </body> </html>
备注：在实际开发中可以获得2个时间进行比较，时间必须已字符串的形式，否则无法进行比较
