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 »
const fruits = new Map([
["apples", 500],
["bananas", 300],
["oranges", 200]
]);
// Get the Size
let x = letters.size
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 2015) feature.
JavaScript 2015 is supported in all browsers since June 2017:
| Chrome 51 |
Edge 15 |
Firefox 54 |
Safari 10 |
Opera 38 |
| May 2016 | Apr 2017 | Jun 2017 | Sep 2016 | Jun 2016 |