JavaScript WeakMap get() Method

JavaScript WeakMap get() 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 get() method

The JavaScript WeakMap get() method returns the value of specified key of an element from a WeakMap object.

Syntax

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

WeakMapObj.get(key)

Parameter

key - The key to be searched.

Return

The value of the specified key.

JavaScript WeakMap get() method example

Here, we will understand get() method through various examples.

Example 1

Let's see a simple example of get() method.

<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(wm.get(obj1)+"<br>");
document.writeln(wm.get(obj2)+"<br>");
document.writeln(wm.get(obj3));
</script>

Test it Now

Output:

jQuery
AngularJS
Bootstrap

Example 2

Let's see an example to determine the result when WeakMap object doesn?t contain the key.

<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(wm.get());//returns undefined
</script>

Test it Now

Output:

undefined

Next TopicWeakMap has() Method

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