jQuery callbacks.locked() Method

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jQuery callbacks.locked() Method

The jQuery callbacks.locked() method returns whether the callbacks list has been locked.

Note: $.Callbacks() is a multi-purpose callbacks list object that provides a powerful way to manage callback lists.

Example

HTML Editor
<!DOCTYPE html> <html lang="en-US"> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> </head> <body> <h1>jQuery callbacks.locked() Method</h1> <p>Click on the button and check your console.</p> <button>Click Me</button> <script> $(document).ready(function(){ $("button").click(function(){ var callbacks = $.Callbacks(); callbacks.add(foo); callbacks.fire("hello"); callbacks.lock(); callbacks.fire("World"); console.log("callbacks locked : " +callbacks.locked()); function foo(value){ console.log("foo : " +value); } }); }); </script> </body> </html>

Syntax

callbacks.locked();

Return Value

ValueExplanation
true If the callbacks is locked.
false If the callbacks is NOT locked.

Browser Support

Devicedesktopmobile
Browsergoogle chromesafarifirefoxinternet Exploreredgeoperagoogle chromesafarifirefoxedgeoperaandroid webviewsamsung internet
callbacks.locked()YesYesYesYesYesYesYesYesYesYesYesYesYes

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