js时间比较(yyyy-mm-dd)(yyyy-mm-dd hh:mi:ss)

//js日期比较(yyyy-mm-dd) function duibi(a, b) {    var arr = a.split("-");    var starttime = new Date(arr[0], arr[1], arr[2]);    var starttimes = starttime.getTime();    var arrs = b.split("-");    var lktime = new Date(arrs[0], arrs[1], arrs[2]);    var lktimes = lktime.getTime();    if (starttimes >= lktimes) {        alert('开始时间大于离开时间，请检查');        return false;    }    else        return true;} //js时间比较(yyyy-mm-dd hh:mi:ss)function comptime() {    var beginTime = "2009-09-21 00:00:00";    var endTime = "2009-09-21 00:00:01";    var beginTimes = beginTime.substring(0, 10).split('-');    var endTimes = endTime.substring(0, 10).split('-');    beginTime = beginTimes[1] + '-' + beginTimes[2] + '-' + beginTimes[0] + ' ' + beginTime.substring(10, 19);    endTime = endTimes[1] + '-' + endTimes[2] + '-' + endTimes[0] + ' ' + endTime.substring(10, 19);    alert(beginTime + "aaa" + endTime);    alert(Date.parse(endTime));    alert(Date.parse(beginTime));    var a = (Date.parse(endTime) - Date.parse(beginTime)) / 3600 / 1000;    if (a < 0) {        alert("endTime小!");    } else if (a > 0) {        alert("endTime大!");    } else if (a == 0) {        alert("时间相等!");    } else {        return 'exception'    }}