Glossary Term
WeakSet.prototype.has()
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1 category
The has() method of WeakSet instances returns a boolean indicating whether the specified value exists in this WeakSet or not.
Return value: Returns true if the specified value exists in the WeakSet object; otherwise false. Always returns false if value is not an object or a non-registered symbol.
Parameters: value The value to test for presence in the WeakSet object. Objects are compared by reference, not by value.
Syntax example: has(value)
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