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
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