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>