jQuery UI Sortable update Event

09 Dec, 2021
jQuery UI consists of GUI widgets, visual effects, and themes implemented using the jQuery JavaScript Library. jQuery UI is great for building UI interfaces for the webpages. It can be used to build highly interactive web applications or can be used to add widgets easily.
The jQuery UI Sortable update event is used to trigger when the user stopped sorting and the DOM position has changed.
Syntax:
Initialize the sortable widget with the update callback function.
$(".selector").selectable({
   update: function( event, ui ) {}
});
Bind an event listener to the sortable update event.
$( ".selector" ).on( "sortupdate", function( event, ui ) {} );
Parameters:
event: This event is triggered when the user stopped the sorting with a position change of DOM.
ui: This is of type object with below-given options.helper: The jQuery object representing the sorted helper.item: The jQuery object representing the current dragged item.offset: The current absolute position of the helper object which is represented as { top, left }.position: The current position of the helper object which is represented as { top, left }.originalPosition: The original position of the helper object which is represented as { top, left }.sender: The sortable itemof type jQuery object coming from moving from one sortable to another.placeholder: The element which is used as a placeholder. This is of type jQuery object.
helper: The jQuery object representing the sorted helper.
item: The jQuery object representing the current dragged item.
offset: The current absolute position of the helper object which is represented as { top, left }.
position: The current position of the helper object which is represented as { top, left }.
originalPosition: The original position of the helper object which is represented as { top, left }.
sender: The sortable itemof type jQuery object coming from moving from one sortable to another.
placeholder: The element which is used as a placeholder. This is of type jQuery object.
CDN Link: First, add jQuery UI scripts needed for your project.
<link rel=”stylesheet” href=”https://code.jquery.com/ui/1.12.1/themes/smoothness/jquery-ui.css”><script src=”https://code.jquery.com/jquery-1.12.4.js”></script><script src=”https://code.jquery.com/ui/1.12.1/jquery-ui.js”></script>
Example:
HTML
<!DOCTYPE html><html lang="en">  <head>    <meta charset="utf-8">    <link rel="stylesheet"           href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">    <script src="https://code.jquery.com/jquery-1.12.4.js">    </script>    <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js">    </script>      <style>        #sortable {            list-style-type: none;            width: 50%;        }          #sortable li {            margin: 10px 0;            padding: 0.5em;            font-size: 25px;            height: 20px;        }    </style>      <script>        $(function () {            $("#sortable").sortable({                update: function( event, ui ) {                    alert("Sortable Event Updated!")                }            });        });    </script></head>  <body>    <center>        <h1 style="color:green;">            GeeksforGeeks        </h1>          <h4>jQuery UI Sortable update Event</h4>          <ul id="sortable">            <li class="ui-state-default">BCD</li>            <li class="ui-state-default">CAB</li>            <li class="ui-state-default">BAC</li>            <li class="ui-state-default">BCA</li>            <li class="ui-state-default">ABC</li>        </ul>    </center></body></html>
Output:
Reference: https://api.jqueryui.com/sortable/#event-update
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