JavaScript WeakMap delete() Method

by Online Tutorials Library July 22, 2022

JavaScript WeakMap delete() method

The JavaScript WeakMap delete() method is used to remove the specified element from a WeakMap object.

Syntax

The delete() method is represented by the following syntax:

JavaScript WeakMap delete() method example

Let’s see an example to determine whether the WeakMap object contains the specified element.

  <script>  var wm = new WeakMap();  var obj1 = {};  var obj2 = {};  var obj3= {};  wm.set(obj1, ‘jQuery’);  wm.set(obj2, ‘AngularJS’);  wm.set(obj3,’Bootstrap’);  document.writeln(“Element present before invoking delete() method: “+ wm.has(obj1)+”<br>”);  wm.delete(obj1);  document.writeln(“Element present after invoking delete() method: “+wm.has(obj1));   </script>  

Test it Now

Output:

Element present before invoking delete() method: true  Element present after invoking delete() method: false

Next TopicWeakMap get() Method

JavaScript WeakMap delete() Method

JavaScript WeakMap delete() method

Syntax

JavaScript WeakMap delete() method example

JavaScript Symbol

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