WeakMap.prototype.get()

The get() method returns a specified element from a WeakMap object.

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Syntax

wm.get(key);

Parameters

key

Required. The key of the element to return from the WeakMap object.

Return value

The element associated with the specified key in the WeakMap object. If the key can't be found, undefined is returned.

Examples

Using the get method

var wm = new WeakMap();
wm.set(window, 'foo');

wm.get(window); // Returns "foo".
wm.get('baz');  // Returns undefined.

Specifications

Browser compatibility

See also

• WeakMap
• WeakMap.set()
• WeakMap.has()