The clear()
method in JavaScript Sets is used to remove all elements from a Set, effectively making the Set empty. It does not take any arguments and does not return any value. After calling the clear()
, the Set will have a size of 0.
Example: Here, the clear()
method is called on the mySet
Set, removing all elements and leaving an empty Set.
Javascript
let mySet = new Set([1, 2, 3, 4, 5]);
console.log(mySet); // Output: Set { 1, 2, 3, 4, 5 }
// Clear all elements from the Set mySet.clear(); console.log(mySet); // Output: Set {}
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Output
Set(5) { 1, 2, 3, 4, 5 } Set(0) {}