jQuery UI Draggable stack Option

Last Updated : 26 Jan, 2022

jQuery UI is a web-based technology and consists of GUI widgets, visual effects, and themes implemented using the jQuery, JavaScript Library. jQuery UI is the best tool for building UI interfaces for the webpages. It can also be used to build highly interactive web applications or can be used to add widgets easily.

In this article, we will learn how to use the jQuery UI Draggable stack Option. This option is used to controls the z-index of the set of elements that match the selector, always brings the currently dragged item to the front. The default value of this option is false.

Syntax:

The stack option takes a String type value and the syntax is as follows:

$( ".selector" ).draggable({ stack: ".products" });

Get the stack option:

var stack = $( ".selector" ).draggable( "option", "stack" );

Set the stack option:

$( ".selector" ).draggable( "option", "stack", ".products" );

CDN Link: The following jQuery Mobile scripts will be needed for your project so we need to add these scripts to your project.

<link href = “https://code.jquery.com/ui/1.10.4/themes/ui-lightness/jquery-ui.css” rel = “stylesheet”>
<script src = “https://code.jquery.com/jquery-1.10.2.js”></script>
<script src = “https://code.jquery.com/ui/1.10.4/jquery-ui.js”></script>

Example: This example describes the uses of the jQuery UI Draggable stack Option.

HTML

<!DOCTYPE html> 
<html lang="en"> 
<head> 
    <link rel="stylesheet" 
          href= 
"https://code.jquery.com/ui/1.10.4/themes/ui-lightness/jquery-ui.css"> 
    <script src= 
"https://code.jquery.com/jquery-1.10.2.js"> 
    </script> 
    <script src= 
"https://code.jquery.com/ui/1.10.4/jquery-ui.js"> 
    </script> 
    <style> 
        .dragg { 
            width: 100px; 
            height: 50px; 
            border: 1px solid black; 
            background-color: blue; 
        } 
  
        .dropp2{ 
            width: 250px; 
            height: 50px; 
            border: 1px solid black; 
            float: center; 
            background-color: green; 
        } 
          
        #btn 
        { 
            padding: 0.5; 
            font-size: 20px; 
            height: 40px; 
            width: 40%; 
        } 
    </style> 
    <script> 
        $(function () { 
            $("#btn").on('click', function () { 
                var stack = $(".dragg").draggable( "option", "stack" ); 
                document.getElementById('gfg').innerHTML += 
                "Stack Value : " + stack; 
            }); 
        }); 
          
        $(function () { 
            $(".dragg").draggable(); 
              
            $(".dropp2").droppable({ 
                drop: function (event, ui) { 
                    $(this) 
                        .find("p") 
                        .html("Dropped!"); 
                } 
            }); 
        }); 
    </script> 
</head> 
<body> 
    <center> 
        <h1 style="color:green;">GeeksforGeeks</h1> 
        <h3>jQuery UI Draggable stack Option</h3> 
        <div class="dragg"> 
            <p>Drag</p> 
  
        </div> 
        <br> 
        <div class="dropp2"> 
            <p>Drop here</p> 
  
        </div> 
        <br> 
        <input type="button" id="btn"
            value="Get Stack"> 
        <h3><span id="gfg"></span></h3> 
    </center> 
</body> 
</html>