WeakMap.prototype.set()
The set() method adds a new element with a specified key
and value to a WeakMap object.
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Syntax
set(key, value)
Parameters
key-
Required. Must be
object. The key of the element to add to theWeakMapobject. value-
Required. Any value. The value of the element to add to the
WeakMapobject.
Return value
The WeakMap object.
Examples
Using the set() method
const wm = new WeakMap();
const obj = {};
// Add new elements to the WeakMap
wm.set(obj, "foo").set(window, "bar"); // chainable
// Update an element in the WeakMap
wm.set(obj, "baz");
Specifications
| Specification |
|---|
| ECMAScript Language Specification # sec-weakmap.prototype.set |
Browser compatibility
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