jQWidgets jqxTree val() Method

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 jqxTree represents a jQuery widget that is used to display a hierarchical collection of items. To display the collection of items, we can populate from ‘UL’ or by using its ‘source’ property.

The val() method is used to set or return the value of selected item. It accepts Single parameter value of String type and returns the String type value.

Syntax:

Set the value of the widget.

$("Selector").jqxTree('val', element);
$("Selector").val(element);

Return the value of the widget.

var value = $("Selector").jqxTree('val');
var value = $("Selector").val();

Linked Files: Download jQWidgets from the given 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” />
<script type=”text/javascript” src=”scripts/jquery-1.11.1.min.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxcore.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqx-all.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/jqxpanel.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxtree.js”></script>

The below example illustrates the jQWidgets jqxTree val() method.

Example:

HTML

<!DOCTYPE html>
<html lang="en">
  
<head>
    <link rel="stylesheet" href=
    "jqwidgets/styles/jqx.base.css" type="text/css" />
    <script type="text/javascript" 
        src="scripts/jquery-1.11.1.min.js"></script>
    <script type="text/javascript" 
        src="jqwidgets/jqxcore.js"></script>
    <script type="text/javascript" 
        src="jqwidgets/jqx-all.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/jqxpanel.js"></script>
    <script type="text/javascript" 
        src="jqwidgets/jqxtree.js"></script>
  
    <style>
        h1,
        h3 {
            text-align: center;
        }
          
        #jqxTree {
            width: 100%;
            margin: 0 auto;
        }
    </style>
</head>
  
<body>
    <h1 style="color: green;">
        GeeksforGeeks
    </h1>
  
    <h3>
        jQWidgets jqxTree val() Method
    </h3>
  
    <div id='jqxTree'>
        <ul>
            <li item-selected='true'>
                GeeksforGeeks
            </li>
  
            <li id="prog">Programming
                <ul>
                    <li>C</li>
                    <li>C++</li>
                    <li>Java</li>
                    <li>Python</li>
                </ul>
            </li>
  
            <li>Web Technology
                <ul>
                    <li>HTML</li>
                    <li>CSS</li>                 
                    <li>JavaScript</li>
                    <li>jQuery</li>
                    <li>PHP</li>
                </ul>
            </li>
        </ul>
    </div>
  
    <center>
        <input type="button" id="jqxBtn" 
            value="Update Selected Item" 
            style="padding: 5px 15px; margin-top: 20px;">
    </center>
  
    <script type="text/javascript">
        $(document).ready(function() {
            $('#jqxTree').jqxTree({
                width: '350px',
                height: '250px'
            });
        });
  
        $('#jqxBtn').click(function() {
            $("#jqxTree").jqxTree('val', "prog");
        });
    </script>
</body>
  
</html>