JavaScript WeakMap delete() Method

JavaScript WeakMap delete() Method with example, clear() method, javascript weakmap methods, javascript weakmap set() method, javascript weakmap delete() method, javascript weakmap has() method, javascript weakmap get() method etc.

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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:

WeakMapObj.delete()

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

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