JavaScript WeakMap has() methodThe JavaScript WeakMap has() method indicates whether the ?WeakMap object contains the specified key. It returns true if the specified key is present, otherwise false. SyntaxThe has() method is represented by the following syntax: Parameterkey - It represents the key to be searched. ReturnA Boolean value. JavaScript WeakMap has() method exampleLet's see an example to determine whether the WeakMap object contains the specified key. Test it NowOutput: true
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