JavaScript

WeakSet has() JavaScript

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The WeakSet has() method checks if a WeakSet object contains the specified object element. Syntax: weakSetObj.has(value) Parameters: value: It represents the element to be searched. Returns: It returns true if a specified element is found in the WeakSet Object, otherwise returns false. Example: <!DOCTYPE html> <html> <body> <script> var hello = new WeakSet(); var obj={}; … Read more

WeakSet delete() JavaScript

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The WeakSet delete() method deletes or removes an element from the WeakSet object. Syntax: weakSetObj.delete(value) Parameters: value: It represents the element to be deleted. Returns: It returns true if the specified element is removed successfully from the WeakSet Object, otherwise returns false. Example 1: <!DOCTYPE html> <html> <body> <script> var hello = new WeakSet(); var … Read more

WeakSet add() JavaScript JS

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The WeakSet add() method adds a new element to the end of a WeakSet object. Syntax: weakSetObj.add(value) Parameters: value: It represents the element to add. Returns: Updated WeakSet object. Example: <!DOCTYPE html> <html> <body> <script> var hello = new WeakSet(); var obj={}; hello.add(obj); document.writeln(hello.has(obj)); </script> </body> </html> Alex Martin

WeakMap set() JavaScript

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The JavaScript WeakMap set() method is used to add or modify the key-value pairs to the WeakMap object. The key must be unique. Syntax: WeakMapObj.set(key,value) Parameters: key: It represents the key of the element to be added or modified. value: It represents the value of the element to be added or modified. Returns: Updated WeakMap … Read more

WeakMap has() JavaScript JS

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The JavaScript WeakMap has() method to find out if the WeakMap object contains the specified value element. Syntax: WeakMapObj.has(key) Parameters: key: It represents the key to be found in the WeakMap object. Returns: It returns true if the given key is present in the WeakMap, otherwise returns false. Example 1: <!DOCTYPE html> <html> <body> <script> … Read more