js日期比较

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

 Date.prototype.format = function(format){
 var o = {
 "M+" : this.getMonth()+1, //month
 "d+" : this.getDate(), //day
 "h+" : this.getHours(), //hour
 "m+" : this.getMinutes(), //minute
 "s+" : this.getSeconds(), //second
 "q+" : Math.floor((this.getMonth()+3)/3), //quarter
 "S" : this.getMilliseconds() //millisecond
 } 

 if(/(y+)/.test(format)) {
 format = format.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length));
 } 

 for(var k in o) {
 if(new RegExp("("+ k +")").test(format)) {
 format = format.replace(RegExp.$1, RegExp.$1.length==1 ? o[k] : ("00"+ o[k]).substr((""+ o[k]).length));
 }
 }
 return format;
 }