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WeakMap get() JavaScript

The JavaScript WeakMap get() method is used to retrieve the value of a specified key.

Syntax:

WeakMapObj.get(key) 

Parameters:
key: It represents the key of the element to be retrieved from the WeakMap object.

Returns:
It returns the value of a specified key

Example 1:

<!DOCTYPE html>
<html>
<body>
<script>  
var hello = new WeakMap();  
var obj = {};  
hello.set(obj, 'HELLO');  
document.writeln(hello.get(obj));  
</script>
</body>
</html>

Output:

HELLO

Example 2:

<!DOCTYPE html>
<html>
<body>
<script type="text/javascript"> 
const testWeakmap = new WeakMap();
const object1 = {};
const object2 = {};
 
testWeakmap.set(object1, 234);
 
document.write(testWeakmap.get(object1));
document.write("</br>");
 
document.write(testWeakmap.get(object2));
</script>
</body>
</html>

Output:

234
undefined
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