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.
La méthode clear() supprime tous les éléments d'un objet Map.
Exemple interactif
const map1 = new Map();
map1.set("bar", "baz");
map1.set(1, "foo");
console.log(map1.size);
// Expected output: 2
map1.clear();
console.log(map1.size);
// Expected output: 0
Syntaxe
js
maMap.clear();
Valeur de retour
Exemple
Utiliser la méthode clear()
js
var maMap = new Map();
maMap.set("truc", "bidule");
maMap.set(1, "toto");
maMap.size; // 2
maMap.has("truc"); // true
maMap.clear();
maMap.size; // 0
maMap.has("truc"); // false
Spécifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-map.prototype.clear |