jQWidgets jqxListBox getSelectedIndex() Method

Last Updated : 05 Oct, 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 jqxListBox is used to illustrate a jQuery ListBox widget which comprises a list of electable elements.

The getSelectedIndex() method is used to return the selected item’s index from the stated list. In case, no item is selected, then -1 is returned. It has no parameter and it returns a number i.e. index.

Syntax:

$("#jqxListBox").jqxListBox('getSelectedIndex');

Linked Files: Download jQWidgets from the link. 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/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>

Example: The below example illustrates the jqxListBox getSelectedIndex() method in jQWidgets.

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/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> 
</head> 
  
<body> 
    <center> 
        <h1 style="color: green;"> 
            GeeksforGeeks 
        </h1> 
  
        <h3> 
            jQWidgets jqxListBox getSelectedIndex() Method 
        </h3> 
  
        <div id="jqxLB"></div> 
        <br /> 
        <input type="button" id="jqxBtn" 
            style="padding: 5px 20px;" 
            value="get the selected index" /> 
    </center> 
  
    <script type="text/javascript"> 
        $(document).ready(function () { 
            var data = ["Computer Science",  
                "C Programming", "C++ Programming"]; 
  
            $("#jqxLB").jqxListBox({ 
                source: data, 
                width: "200px", 
                height: "80px", 
                selectedIndex: 1, 
            }); 
  
            $("#jqxBtn").on("click", function () { 
                var i = $("#jqxLB").jqxListBox("getSelectedIndex"); 
                console.log("Selected Index is: " + i); 
            }); 
        }); 
    </script> 
</body> 
  
</html> 