时间大小比较

]var begintime = document.getElementById('begintime').value;
var endtime = document.getElementById('endtime').value;
var beginTimes = begintime.substring(0,10).split('-');
var endTimes = endtime.substring(0,10).split('-');

begintime = beginTimes[1]+'-'+beginTimes[2]+'-'+beginTimes[0];
endtime = endTimes[1]+'-'+endTimes[2]+'-'+endTimes[0];
// var a = (Date.parse(endtime) - Date.parse(begintime))/3600/1000;

if(a > 0){
return true;
}
else
{
alert("请您重新确定您设定的招聘截至时间！");
document.getElementById('endtime').focus();
return false;
}

]var dStart = document.getElementById("begintime");
var dEnd = document.getElementById("endtime");
if(trim(dStart.value) != "" && trim(dEnd.value) != ""){
var tmpArray = dStart.value.split("-");
var tmp1 = new Date(tmpArray[0], tmpArray[1], tmpArray[2]);
tmpArray = dEnd.value.split("-");
var tmp2 = new Date(tmpArray[0], tmpArray[1], tmpArray[2]);
if(tmp1 > tmp2){
alert("日期开始时间大于结束时间，请重新输入！");
return false;
}
else
{
return true;
}