JavaScript Map size
Example
// Create a Map
const fruits = new Map([
["apples", 500],
["bananas", 300],
["oranges", 200]
]);
// Get the Size
let x = letters.size
Try it Yourself »
Description
The size property returns the number of elements in a map.
Syntax
map.size
Parameters
| NONE |
Return Value
| Type | Description |
| Number | The number of elements in the map. |
Browser Support
map.size() is an ECMAScript6 (ES6) feature.
ES6 (JavaScript 2015) is supported in all modern browsers since June 2017:
| Chrome 51 | Edge 15 | Firefox 54 | Safari 10 | Opera 38 |
| May 2016 | Apr 2017 | Jun 2017 | Sep 2016 | Jun 2016 |
map.size() is not supported in Internet Explorer.
