js 判断时间大小

    //判断结束时间一定要大于开始时间
    function comparativeTime(){
        var isok=true;
        //早餐配送时间
        var breakfastScanTimeMin = $("#breakfastScanTimeMin").val();
        var breakfastScanTimeMax = $("#breakfastScanTimeMax").val();
        //早餐订餐时间
        var breakfastBookTimeMin = $("#breakfastBookTimeMin").val();
        var breakfastBookTimeMax = $("#breakfastBookTimeMax").val();
        //午餐配送时间
        var lunchScanTimeMin = $("#lunchScanTimeMin").val();
        var lunchScanTimeMax = $("#lunchScanTimeMax").val();
        //午餐订餐时间
        var lunchBookTimeMin = $("#lunchBookTimeMin").val();
        var lunchBookTimeMax = $("#lunchBookTimeMax").val();
        //晚餐配送时间
        var dinnerScanTimeMin = $("#dinnerScanTimeMin").val();
        var dinnerScanTimeMax = $("#dinnerScanTimeMax").val();
        //晚餐订餐时间
        var dinnerBookTimeMin = $("#dinnerBookTimeMin").val();
        var dinnerBookTimeMax = $("#dinnerBookTimeMax").val();
        //宵夜扫码时间
        var supperScanTimeMin = $("#supperScanTimeMin").val();
        var supperScanTimeMax = $("#supperScanTimeMax").val();
        //宵夜订餐时间
        var supperBookTimeMin = $("#supperBookTimeMin").val();
        var supperBookTimeMax = $("#supperBookTimeMax").val();
        //便利店扫码时间
        var facilitateScanTimeMin = $("#facilitateScanTimeMin").val();
        var facilitateScanTimeMax = $("#facilitateScanTimeMax").val();
        //便利店订餐时间
        var facilitateBookTimeMin = $("#facilitateBookTimeMin").val();
        var facilitateBookTimeMax = $("#facilitateBookTimeMax").val();
        //下午茶扫码时间
        var afternoonTeaScanTimeMin = $("#afternoonTeaScanTimeMin").val();
        var afternoonTeaScanTimeMax = $("#afternoonTeaScanTimeMax").val();
        //下午茶订餐时间
        var afternoonTeaBookTimeMin = $("#afternoonTeaBookTimeMin").val();
        var afternoonTeaBookTimeMax = $("#afternoonTeaBookTimeMax").val();
 
        //判断时间大小
        var myDate = new Date();
        //早餐配送时间
        var breakfastScanMin = myDate.toLocaleDateString()+breakfastScanTimeMin;
        var breakfastScanMax = myDate.toLocaleDateString()+breakfastScanTimeMax;
        //早餐订餐时间
        var breakfastBookMin = myDate.toLocaleDateString()+breakfastBookTimeMin;
        var breakfastBookMax = myDate.toLocaleDateString()+breakfastBookTimeMax;
        //午餐配送时间
        var lunchScanMin = myDate.toLocaleDateString()+lunchScanTimeMin;
        var lunchScanMax = myDate.toLocaleDateString()+lunchScanTimeMax;
        //午餐订餐时间
        var lunchBookMin = myDate.toLocaleDateString()+lunchBookTimeMin;
        var lunchBookMax = myDate.toLocaleDateString()+lunchBookTimeMax;
        //晚餐配送时间
        var dinnerScanMin = myDate.toLocaleDateString()+dinnerScanTimeMin;
        var dinnerScanMax = myDate.toLocaleDateString()+dinnerScanTimeMax;
        //晚餐订餐时间
        var dinnerBookMin = myDate.toLocaleDateString()+dinnerBookTimeMin;
        var dinnerBookMax = myDate.toLocaleDateString()+dinnerBookTimeMax;
        //宵夜扫码时间
        var supperScanMin = myDate.toLocaleDateString()+supperScanTimeMin;
        var supperScanMax = myDate.toLocaleDateString()+supperScanTimeMax;
        //宵夜订餐时间
        var supperBookMin = myDate.toLocaleDateString()+supperBookTimeMin;
        var supperBookMax = myDate.toLocaleDateString()+supperBookTimeMax;
        //便利店扫码时间
        var facilitateScanMin = myDate.toLocaleDateString()+facilitateScanTimeMin;
        var facilitateScanMax = myDate.toLocaleDateString()+facilitateScanTimeMax;
        //便利店订餐时间
        var facilitateBookMin = myDate.toLocaleDateString()+facilitateBookTimeMin;
        var facilitateBookMax = myDate.toLocaleDateString()+facilitateBookTimeMax;
        //下午茶扫码时间
        var afternoonTeaScanMin = myDate.toLocaleDateString()+afternoonTeaScanTimeMin;
        var afternoonTeaScanMax = myDate.toLocaleDateString()+afternoonTeaScanTimeMax;
        //下午茶订餐时间
        var afternoonTeaBookMin = myDate.toLocaleDateString()+afternoonTeaBookTimeMin;
        var afternoonTeaBookMax = myDate.toLocaleDateString()+afternoonTeaBookTimeMax;
 
        if(breakfastScanMin >= breakfastScanMax){
            alert('早餐配送时间：结束时间不能小于开始时间');
            isok=false;
        }
        if(breakfastBookMin >= breakfastBookMax){
            alert('早餐订餐时间：结束时间不能小于开始时间')
            isok=false;
        }
        if(lunchScanMin >= lunchScanMax){
            alert('午餐配送时间：结束时间不能小于开始时间')
            isok=false;
        }
        if(lunchBookMin >= lunchBookMax){
            alert('午餐订餐时间：结束时间不能小于开始时间')
            isok=false;
        }
        if(dinnerScanMin >= dinnerScanMax){
            alert('晚餐配送时间：结束时间不能小于开始时间')
            isok=false;
        }
        if(dinnerBookMin >= dinnerBookMax){
            alert('晚餐订餐时间：结束时间不能小于开始时间')
            isok=false;
        }
        if(supperScanMin >= supperScanMax){
            alert('宵夜扫码时间：结束时间不能小于开始时间')
            isok=false;
        }
        if(supperBookMin >= supperBookMax){
            alert('宵夜订餐时间：结束时间不能小于开始时间')
            isok=false;
        }
        if(facilitateScanMin >= facilitateScanMax){
            alert('便利店扫码时间：结束时间不能小于开始时间')
            isok=false;
        }
        if(facilitateBookMin >= facilitateBookMax){
            alert('便利店订餐时间：结束时间不能小于开始时间')
            isok=false;
        }
        if(afternoonTeaScanMin >= afternoonTeaScanMax){
            alert('下午茶扫码时间：结束时间不能小于开始时间')
            isok=false;
        }
        if(afternoonTeaBookMin >= afternoonTeaBookMax){
            alert('下午茶订餐时间：结束时间不能小于开始时间')
            isok=false;
        }
        return isok;
    }