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jQWidgets jqxDropDownList updateAt() Method

  • Last Updated : 13 Sep, 2021

jQWidgets is a JavaScript framework for making web-based applications for PC and mobile devices. It is a very powerful, optimized, platform-independent, and widely supported framework. The jqxDropDownList widget is a jQuery drop-down list that contains a list of selectable items displayed in the drop-down list.

The updateAt() method is used to update an item to the DropDown list. It accept two parameters, the first one is item of Object type and the second one is index of Number type. It does not return any value.

The item has the following fields:

  • label – It specifies the label of item.
  • value – It specifies the value of item.
  • disabled – It specifies whether the item is enabled/disabled.
  • checked – It specifies whether the item is checked/unchecked.
  • hasThreeStates – It specifies that the checkbox item supports three states.
  • html – It specifies the display item in HTML. It can be used instead of label.
  • index – It specifies the item index number.
  • group – It specifies the item’s group.

Syntax:

$("Selector").jqxDropDownList('updateAt', 'item', index);

 

Linked Files: Download jQWidgets from the link https://www.jqwidgets.com/download/. In the HTML file, locate the script files in the downloaded folder.

<link rel=”stylesheet” href=”jqwidgets/styles/jqx.base.css” type=”text/css” />
<link rel=”stylesheet” href=”jqwidgets/styles/jqx.energyblue.css”>
<script type=”text/javascript” src=”scripts/jquery-1.11.1.min.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqx-all.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxcore.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxbuttons.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxscrollbar.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxlistbox.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdropdownlist.js”></script>

The below example illustrates the jqxDropDownList updateAt() method in jQWidgets.

Example:

HTML




<!DOCTYPE html>
<html lang="en">
  
<head>
    <link rel="stylesheet" href=
        "jqwidgets/styles/jqx.base.css" type="text/css" />
    <link rel="stylesheet" href=
        "jqwidgets/styles/jqx.energyblue.css">
    <script type="text/javascript" 
        src="scripts/jquery-1.11.1.min.js"></script>
    <script type="text/javascript" 
        src="jqwidgets/jqx-all.js"></script>
    <script type="text/javascript" 
        src="jqwidgets/jqxcore.js"></script>
    <script type="text/javascript" 
        src="jqwidgets/jqxbuttons.js"></script>
    <script type="text/javascript" 
        src="jqwidgets/jqxscrollbar.js"></script>
    <script type="text/javascript" 
        src="jqwidgets/jqxlistbox.js"></script>
    <script type="text/javascript" 
        src="jqwidgets/jqxdropdownlist.js"></script>
</head>
  
<body>
    <center>
        <h1 style="color: green;">
            GeeksforGeeks
        </h1>
  
        <h3>
            jQWidgets jqxDropDownList updateAt() Method
        </h3>
  
        <div id='jqxDDL'></div>
  
        <input id="jqxBtn" type="button" 
            value="Update Item at Given Index" 
            style="padding: 5px 15px; margin-top: 50px;">
    </center>
  
    <script type="text/javascript">
        $(document).ready(function() {
            var data = [
                "Computer Science",
                "C Programming",
                "C++ Programming",
                "Java Programming",
                "Python Programming",
                "HTML",
                "CSS",
                "JavaScript",
                "jQuery",
                "PHP",
                "Bootstrap"
            ];
  
            $("#jqxDDL").jqxDropDownList({
                source: data,
                theme: 'energyblue',
                selectedIndex: 2
            });
  
            $("#jqxBtn").on('click', function() {
                $("#jqxDDL").jqxDropDownList(
                    'updateAt', "Python Programming", 2);
            });
        });
    </script>
</body>
  
</html

Output:

Reference: https://www.jqwidgets.com/jquery-widgets-documentation/documentation/jqxdropdownlist/jquery-dropdownlist-api.htm


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