Set.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.

Die clear()-Methode von Set-Instanzen entfernt alle Elemente aus diesem Set.

Probieren Sie es aus

const set1 = new Set();
set1.add(1);
set1.add("foo");

console.log(set1.size);
// Expected output: 2

set1.clear();

console.log(set1.size);
// Expected output: 0

Syntax

js
clear()

Parameter

Keine.

Rückgabewert

Keine (undefined).

Beispiele

Verwendung der clear()-Methode

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

Spezifikationen

Specification
ECMAScript® 2025 Language Specification
# sec-set.prototype.clear

Browser-Kompatibilität

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
clear

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

Siehe auch