The set()
method adds a new element with a specified key
and value
to a WeakMap
object.
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Syntax
wm.set(key, value);
Parameters
- key
- Required. Must be
object
. The key of the element to add to theWeakMap
object. - value
- Required. Any value. The value of the element to add to the
WeakMap
object.
Return value
The WeakMap
object.
Examples
Using the set
method
var wm = new WeakMap(); var 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 (ECMA-262) The definition of 'WeakMap.prototype.set' in that specification. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
set | Chrome Full support 36 | Edge Full support 12 | Firefox
Full support
6
| IE
Partial support
11
| Opera Full support 23 | Safari Full support 8 | WebView Android Full support 37 | Chrome Android Full support 36 | Firefox Android
Full support
6
| Opera Android Full support 24 | Safari iOS Full support 8 | Samsung Internet Android Full support 3.0 | nodejs
Full support
0.12
|
Legend
- Full support
- Full support
- Partial support
- Partial support
- See implementation notes.
- See implementation notes.
- User must explicitly enable this feature.
- User must explicitly enable this feature.