.size
The .size
property returns the number of entries inside of a Map
object.
Syntax
map.size;
Since .size
is a property of Map
, no parentheses are needed.
Example
Assuming there is a map of fruits
, the number of keys can be checked with the .size
property:
const fruits = new Map([['Apples', 5],['Oranges', 8],]);console.log(fruits.size); // Output: 2