Set.prototype.clear()

The clear() method of Set instances removes all elements from this set.

Try it

const set = new Set();
set.add(1);
set.add("foo");

console.log(set.size);
// Expected output: 2

set.clear();

console.log(set.size);
// Expected output: 0

Syntax

js
clear()

Parameters

None.

Return value

None (undefined).

Examples

undefined

Using the clear() method

js
const mySet = new Set();
mySet.add(1);
mySet.add("foo");

console.log(mySet.size); // 2
console.log(mySet.has("foo")); // true

mySet.clear();

console.log(mySet.size); // 0
console.log(mySet.has("foo")); // false

Specifications

See also