get the value from input kendo ComboBox using JQuery

Question

I am using kendo comboBox in my app and I need to get value and ID of record out of ComboBox, outside the ComboBox actual function.... I am using comboBox dropdown in table against each record so I can't relay on css ID to get comboBox value... I have managed to reach to input comboBox of selected record and I did this test by apply background color to it. I have tested .val() which works fine for just input textbox but its not happening for kendo ComboBox...

Many Thanks

input

  <td class="N_td">@Html.TextBox("Input_MarkingSchemeTitle_Element", null, new { id = @item.ElementID + "_EMST", @class = "ElementMarkingSchemeTitle k1-grid-input k-textbox_3 _MarkSchemeId_Input" })  </td>

ComboBox function

 $("._MarkSchemeId_Input").kendoComboBox({
        minLength: 1,
        filter: 'contains',
        dataTextField: "Name",
        dataValueField: "ID",
        dataSource: {
            type: "json",
            serverFiltering: false,
            transport: {
                read: "/Qualification/GetAllMarkScheme_JSON"
            },
        },
        change: function () {

           alert("value " + this.value() + "   " + this.text());                      
        }
    });

jQuery function

$("#ElementTable").on("click", ".k1-grid-confirm", function () {


   $(this).closest('table').find("._MarkSchemeId_Input").css("background", "red");

   var a1 = $(this).closest('table').find("._MarkSchemeId_Input").text(); // doesn't work

        alert("a1  " + a1);
 .....

Answer 1

Have a look at the Kendo demo , it actually shows precisely what are you interested in

 var fabric = $("#fabric").data("kendoComboBox");
                var select = $("#size").data("kendoComboBox");
                $("#get").click(function() {
                    alert('Thank you! Your Choice is:\n\nFabric ID: ' +   fabric.value() + ' and Size: ' + select.value());
                });

The value retrieval in your example is not working because you are calling method at the html element not a Kendo control. Consider this example :

$("#combobox").kendoComboBox({
  dataSource: [ "Apples", "Oranges" ]
});
var combobox = $("#combobox").data("kendoComboBox");
combobox.value("Oranges");

Therefore in your case do following :

$(this).closest('table').find("._MarkSchemeId_Input").data("kendoComboBox").text()

Answer 2

By design, the ComboBox widget copies all styles and CSS classes from the original element to the visible input. This is documented here . If you examine the rendered HTML it will look like this:

• original element + initialization code

<input class="custom-class" />
    <script>
        $(function() {
            $(".custom-class").kendoComboBox();
        });
    </script>

• results in this HTML

<span class="k-widget k-combobox k-header custom-class">
      <span tabindex="-1" unselectable="on" class="k-dropdown-wrap k-state-default">
        <input class="k-input custom-class" type="text" autocomplete="off" style="width: 100%;">
        <span tabindex="-1" unselectable="on" class="k-select">
          <span unselectable="on" class="k-icon k-i-arrow-s" role="button" tabindex="-1">
            select
          </span>
        </span>
      </span>
      <input class="custom-class" data-role="combobox" style="display: none;">
    </span>

As you can see the custom-class is copied to wrapper element and to the visible input. Because of this you will need to use a more specific selector to find only the original input elements:

$(".custom-class[data-role=combobox]");

Note that this will return a list of input elements. If you need to get selected data items, you will need to loop them and get the combobox instance for each of the input element.

Here I prepared a simple jsBin demo, which shows how to accomplish this.

Answer 3

I have managed to resolve the issue as following

<td class="N_td">@Html.TextBox("Input_MarkingSchemeTitle_Element", null, new { id = @item.ElementID + "_EMST", @class = "ElementMarkingSchemeTitle k1-grid-input k-textbox_3 _MarkScheme_Input" })  </td>


 //--get all the MarkScheme from database and put in drop-down 
    $("._MarkScheme_Input").kendoComboBox({
        minLength: 1,
        filter: 'contains',
        dataTextField: "Name",
        dataValueField: "ID",
        dataSource: {
            type: "json",
            serverFiltering: false,
            transport: {
                read: "/Qualification/GetAllMarkScheme_JSON"
            },
        },
        change: function () {

           // alert("value " + this.value() + "   " + this.text());                      //if it need to test selected record data...    
      }
    });


 $("#ElementTable").on("click", ".k1-grid-confirm", function () {


        $(this).closest('table').find("._MarkScheme_Input").css("background", "red");

        //read all the input 'comboxBox' in loop...
        //var _comboBoxInput = $(this).closest('table').find("._MarkScheme_Input").filter("[data-role=combobox]");
        //_comboBoxInput.each(function (idx, input) {
        //    alert("idx " + idx + "  \n input " + input);
        //    var combobox = $(input).data("kendoComboBox");
        //    alert("ID>>>  : " + combobox.value() + ", Text: >>> " + combobox.text());
        //});

        //-------------------------
        var input = $(this).closest('table').find("._MarkScheme_Input");
        var comboboxInput = input.filter("[data-role=combobox]");
        var combobox = comboboxInput.data("kendoComboBox");
        var selectedText = combobox.text();
        var selectedValue = combobox.value();
        var dataItem = combobox.dataItem();

        alert("ID>>>  : " + selectedValue + ", Text: >>> " + selectedText);