Map.prototype.clear()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The clear() method of Map instances removes all elements from this map.

Try it

Syntax

js
clear()

Parameters

None.

Return value

None (undefined).

Examples

Using clear()

js
const myMap = new Map();
myMap.set("bar", "baz");
myMap.set(1, "foo");

console.log(myMap.size); // 2
console.log(myMap.has("bar")); // true

myMap.clear();

console.log(myMap.size); // 0
console.log(myMap.has("bar")); // false

Specifications

Specification
ECMAScript Language Specification
# sec-map.prototype.clear

Browser compatibility

BCD tables only load in the browser

See also