Javascript （开始

您可以为下拉过滤器添加更改事件，以及可以触发的onChange事件，并更改休假计数值，如下所示

$('#filter').on('change', function (e) {

    var valueSelected = this.value;
    var value ;
   switch(valueSelected ) {
    case "Half Day":
        vaule =  $('#leavecount")val();
        value =  value/2;
        $('#leavecount")val(value);
        break;
    case "Short Leave":
        vaule =  $('#leavecount")val();
        value =  value/4;
        $('#leavecount")val(value);
        break;
    default:
        default ;
}


});

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您可以为下拉过滤器添加change事件，以及可以触发的onChange事件，并更改休假计数值，如下所示

$('#filter').on('change', function (e) {

    var valueSelected = this.value;
    var value ;
   switch(valueSelected ) {
    case "Half Day":
        vaule =  $('#leavecount")val();
        value =  value/2;
        $('#leavecount")val(value);
        break;
    case "Short Leave":
        vaule =  $('#leavecount")val();
        value =  value/4;
        $('#leavecount")val(value);
        break;
    default:
        default ;
}


});

var leavefactor = 1;
      if ($("select#filter").val() == 'ShortLeave') {leavefactor = 0.25;} else if($("select#filter").val() == 'HalfDay') {leavefactor = 0.5;}
      $('#leavecount').val(leavecount * leavefactor);

$('#filter').on('change', function (e) {

    var valueSelected = this.value;
    var value ;
   switch(valueSelected ) {
    case "Half Day":
        vaule =  $('#leavecount")val();
        value =  value/2;
        $('#leavecount")val(value);
        break;
    case "Short Leave":
        vaule =  $('#leavecount")val();
        value =  value/4;
        $('#leavecount")val(value);
        break;
    default:
        default ;
}


});