前台判断开始时间是否小于结束时间

         // 判断开始时间是否小于结束时间
            if ($("#txtBeginTime").length > 0 && $("#txtEndTime").length > 0) {
                if (Date.parse(TimeFormatToSQL($("#txtBeginTime").val()).replace("-", "/")) > Date.parse(TimeFormatToSQL($("#txtEndTime").val()).replace("-", "/"))) {
                    alert("开始时间不能大于结束时间!");
                    //            $("#txtBeginSearchTimeByBE").focus();
                  return;

    ///<summary>

///    将传递的时间值转换为SQL识别的时间格式
    ///<param name="strTime">时间(正常的页面显示时间格式)</param>
    ///</summary>
    function  TimeFormatToSQL(strTime) {
        var strResult = "";
        var strTemp = "";
        for (var i = 0; i < strTime.length; i++) {
            strTemp = strTime.substr(i, 1);
            if (strTemp == "年" || strTemp == "月")
                strResult += "-";
            else
                if (strTemp == "日" || strTemp == "秒") {
                    if (strTemp == "日")
                        strResult += "|";
                    else
                        strResult += "";
                }
                else
                    if (strTemp == "时" || strTemp == "分")
                        strResult += ":";
                    else
                        strResult += strTemp;
        }
        var strArgDateTime = strResult.split('|');  //此时的时间格式可能为2010-11-11 11: 或2010-11-11 11等格式
        if (strArgDateTime.length == 1) {
            //日期部分进行处理
            var strArgDate = strArgDateTime[0].split('-'); //此时对时间部分进行处理,可能为11: 11 或11:00等格式
            if (strArgDate.length == 2) {
                if (strArgDate[1].length < 1)
                    strResult = strArgDate[0];
                else
                    strResult = strArgDateTime[0] + "-01";
            } else
                if (strArgDate.length == 3) {
                    if (strArgDate[2].length < 1)
                        strResult = strArgDate[0] + "-" + strArgDate[1] + "-01";
                }
        }
        else
            if (strArgDateTime.length == 2) {
                //时间部分进行处理
                var strArgTime = strArgDateTime[1].split(':'); //此时对时间部分进行处理,可能为11: 11 或11:00等格式
                if (strArgTime.length == 1) {
                    strResult = strArgDateTime[0] + " " + strArgDateTime[1] + ":00:00"
                } else
                    if (strArgTime.length == 2) {
                        if (strArgTime[1].length < 1)
                            strResult = strArgDateTime[0] + " " + strArgDateTime[1] + "00"
                        else
                            strResult = strArgDateTime[0] + " " + strArgDateTime[1] + ":00"
                    } else
                        if (strArgTime.length == 3) {
                            if (strArgTime[2].length < 1)
                                strResult = strArgDateTime[0] + " " + strArgDateTime[1] + "00"
                        }
            }
        return strResult;
    }