WeakMap.prototype.get()
The get()
method returns a specified element from a
WeakMap
object.
Try it
Syntax
js
get(key)
Parameters
key
-
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. Always returns
undefined
if key
is not an object or a non-registered symbol.
Examples
Using the get() method
js
const wm = new WeakMap();
wm.set(window, "foo");
wm.get(window); // Returns "foo".
wm.get("baz"); // Returns undefined.
Specifications
Specification |
---|
ECMAScript Language Specification # sec-weakmap.prototype.get |
Browser compatibility
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