js 日期时间比较

js时间日期比较

 <script type="text/javascript">
         //begin > end  返回True
         function comptime(beginTime, endTime) {
             var begin = beginTime.replace(new RegExp("/", "g"), '-');
             var end = endTime.replace(new RegExp("/", "g"), '-');
             var beginDate = begin.split(" ")[0];
             var endDate = end.split(" ")[0];

             var beginTime = begin.split(" ").length == 1 ? new Array() : begin.split(" ")[1].split(":");
             var endTime = end.split(" ").length == 1 ? new Array() : end.split(" ")[1].split(":");

             if (new Date(beginDate) > new Date(endDate)) {
                 return true;
             }
             if (new Date(beginDate) < new Date(endDate)) {
                 return false;
             }else {
                 var length = beginTime.length > endTime.length ? beginTime.length : endTime.length;
                 beginTime = beginTime.padding(0,length);
                 endTime = endTime.padding(0, length);
                 for (var i = 0; i < length; i++) {
                     if (parseInt(beginTime[i], 10) > parseInt(endTime[i], 10)) {
                         return true;
                     }
                 }
                 return false;
             }
         }

         Array.prototype.padding = function (numchar, length) {
             if (this.length < length) {
                 for (var i = 0; i < length - this.length; i++) {
                     this.push(numchar);
                 }
             }

             return this;
         }
     </script>