Js Object Map Function
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Js Object Map Function
It creates a new array without modifying the elements of the original array. Has() returns true if a key exists in a map: Set() sets the value for a key in a map:
Here, we have used numbers as keys and strings to represent that number as value. Get() gets the value for a key in a map: Every number can be represented as a word by using the number as key and word as value.
Simple iteration over array of objects.
Has() returns true if a key exists in a map: The object.map is not a function error occurs because the map method is not implemented on objects. Map () calls a function once for each element in an array. Map.prototype.keys() returns a new iterator object that contains the keys for each element in the map object in insertion order.
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