js时间比较函数

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'     } }