JavaScript has()

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2023-05-16 11:21:29 -

JavaScript has()

The has() function of the map object accepts a key in string format and returns a boolean value of true if the specified key exists. Otherwise, the function returns false. Map is a data structure in JavaScript that allows the storage of [key, value] pairs where any value can be used as either a key or value. Syntax mapObject.has(key)...

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