Map.prototype.size
The size accessor property returns the number of elements in a
Map object.
Try it
Description
The value of size is an integer representing how many entries the Map object
has. A set accessor function for size is undefined; you can not change this
property.
Examples
Using size
const myMap = new Map();
myMap.set('a', 'alpha');
myMap.set('b', 'beta');
myMap.set('g', 'gamma');
console.log(myMap.size); // 3
Specifications
| Specification |
|---|
| ECMAScript Language Specification # sec-get-map.prototype.size |
Browser compatibility
BCD tables only load in the browser