jQuery: Remove all of the callbacks from a list

Last update on May 30 2022 10:21:10 (UTC/GMT +8 hours)

jQuery Fundamental - I : Exercise-45

Using jQuery remove all of the callbacks from a list.

Sample solution :

HTML Code :


<!DOCTYPE html>
  <html>
  <head>
  <script src="https://code.jquery.com/jquery-git.js"></script>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Using jQuery remove all of the callbacks from a list.</title>
  </head>
  <body>
</body>
  </html>

JavaScript Code :


// Sample function (f1) to be added to a callbacks list
var f1 = function( value1, value2 ) {
  console.log( "f1: " + value1 + "," + value2 );
};
 
// Another function (f2) to also be added to the list
var f2 = function( value1, value2 ) {
  console.log( "f2: " + value1 + "," + value2 );
};
 
var callbacks = $.Callbacks();
 
// Add the two functions
callbacks.add( f1 );
callbacks.add( f2 );
 
// Empty all callbacks
callbacks.empty();
 
// Test to confirm all callbacks have been removed
console.log( callbacks.has( f1 ) );
console.log( callbacks.has( f2 ) );

See the Pen jquery-fundamental-exercise-45 by w3resource (@w3resource) on CodePen.

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