jQuery UI Droppable instance() Method

Last Updated : 20 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 be using the jQuery UI Droppable instance() method to retrieve the droppable’s instance object. If the element does not have any associated instance, “undefined” is returned. It does not accept any parameter for functioning.

Syntax:

var instance= $( ".selector" ).droppable( "instance" );

Parameter: This method does not accept any parameter.

Return type: This method returns an object value that contains the droppable’s instance object.

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 demonstrates the jQuery UI Droppable instance() method.

HTML

<!DOCTYPE html> 
<html lang="en"> 
<head> 
   <meta charset="utf-8"> 
   <link rel="stylesheet" href= 
"//code.jquery.com/ui/1.12.1/themes/smoothness/jquery-ui.css"> 
   <script src= 
"//code.jquery.com/jquery-1.12.4.js"> 
   </script> 
    <script src= 
"//code.jquery.com/ui/1.12.1/jquery-ui.js"> 
   </script> 
    
<style> 
    .drag 
    { 
        width: 90px;  
        height: 40px; 
        border: 1px solid black; 
        background-color:blue; 
    } 
    .drop2, .drop3  
    { 
        width:200px;  
        height:40px; 
        border:1px solid black; 
        float: center; 
        background-color:green; 
    } 
      
    #btn 
    { 
        padding: 0.5; 
        font-size:25px; 
        height: 40px; 
        width: 150px; 
    } 
</style> 
      
<script> 
    $(function() { 
          
        $("#btn").on('click', function () { 
            var insta = $(".drop3").droppable( "instance" ); 
            console.log(insta); 
        }); 
          
        $(".drag").draggable(); 
        $(".drop2").droppable({ 
            drop: function( event, ui ) { 
                $( this ).find( "p" ).html( "Dropped!" ); 
            } 
        }); 
          
        $(".dropp3").droppable("disable"); 
              
        $(".dropp3").droppable({ 
            drop: function( event, ui ) { 
                $( this ).find( "p" ).html( "Dropped!" ); 
            } 
        }); 
    }); 
</script> 
</head> 
  
<body> 
    <center> 
        <h1 style="color:green;">GeeksforGeeks</h1> 
      
        <h3>jQuery UI Droppable instance() method</h3> 
          
        <div class="drag"> 
            <p>Drag</p> 
  
        </div> 
        <br> 
        <div class="drop2"> 
            <p>Drop here</p> 
  
        </div> 
        <br> 
        <div class="drop3"> 
            <p>Disable - Can't Drop Here</p> 
        </div> 
        <br> 
        <input type="button" id="btn" value="Instance"> 
        <h4><span id="spanID"></span></h4> 
    </center> 
</body> 
  
</html> 