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

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JavaScript WeakMap delete() method

Syntax

JavaScript WeakMap delete() method example

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