The get()
method returns a specified element from a Map
object. If the value that is associated to the provided key is an object, then you will get a reference to that object and any change made to that object will effectively modify it inside the Map
object.
The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
Syntax
myMap.get(key)
Parameters
key
- The key of the element to return from the
Map
object.
Return value
The element associated with the specified key, or undefined
if the key can't be found in the Map
object.
Examples
Using get()
let myMap = new Map(); myMap.set('bar', 'foo'); myMap.get('bar'); // Returns "foo" myMap.get('baz'); // Returns undefined
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'Map.prototype.get' 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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
get | Chrome Full support 38 | Edge Full support 12 | Firefox Full support 13 | IE Full support 11 | Opera Full support 25 | Safari Full support 8 | WebView Android Full support 38 | Chrome Android Full support 38 | Firefox Android Full support 14 | Opera Android Full support 25 | Safari iOS Full support 8 | Samsung Internet Android Full support 3.0 | nodejs
Full support
0.12
|
Legend
- Full support
- Full support
- User must explicitly enable this feature.
- User must explicitly enable this feature.