JavaScript has always allowed you to work with key/value pairs through objects. Standard built-in objects. We can … The map() method creates a new array with the results of calling a function for every array element.. Today we will discuss about "Map" in JavaScript which is designed to serve the exact same purpose. Write a JavaScript program to map the values of an array to an object using a function, where the key-value pairs consist of the original value as the key and the mapped value. In this article, we will look at four different ways to looping over object properties in JavaScript. Google Maps JavaScript API error: MissingKeyMapError; For web developers: If you have access to the source code of your application, look for the