Js Object Keys Map

This method does not accept any parameters. The purpose of the function is to take an object and modify the original contents of the object using a method available to all objects (objects and arrays alike) without returning an array. As a rule, for plain objects, you can use the methods below:

Code for the above method is provided below:. Map set array plain objects also support similar methods, but the syntax is a bit different. Simple iteration over array of objects.

The map.keys() method is used to extract the keys from a given map object and return the iterator object of keys.

Delete() removes a map element specified by a key: Any javascript object may be used as a key, however strict identity is used to evaluate key equality. Use the for of loop to iterate through a map in javascript use foreach method to iterate through a map a map has two components, the key and the value. The purpose of the function is to take an object and modify the original contents of the object using a method available to all objects (objects and arrays alike) without returning an array.