Map.prototype.size
The size accessor property of Map instances returns the number of elements in this map.
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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
js
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 |
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