js日期比较

alert(EDate< new Date().format("yyyy-MM-dd hh:mm:ss"));

 1 Date.prototype.format = function(format){
 2 var o = {
 3 "M+" : this.getMonth()+1, //month
 4 "d+" : this.getDate(), //day
 5 "h+" : this.getHours(), //hour
 6 "m+" : this.getMinutes(), //minute
 7 "s+" : this.getSeconds(), //second
 8 "q+" : Math.floor((this.getMonth()+3)/3), //quarter
 9 "S" : this.getMilliseconds() //millisecond
10 }
11
12 if(/(y+)/.test(format)) {
13 format = format.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length));
14 }
15
16 for(var k in o) {
17 if(new RegExp("("+ k +")").test(format)) {
18 format = format.replace(RegExp.$1, RegExp.$1.length==1 ? o[k] : ("00"+ o[k]).substr((""+ o[k]).length));
19 }
20 }
21 return format;
22 }