Map.prototype.clear()

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

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See also