This method is used to create a new Map data structure. A Map is a built-in data structure in JavaScript that allows you to store key-value pairs and provides various methods for working with these pairs. Here's how you can use "new Map()" to create a new Map:
 
Example:

const myMap = new Map();myMap.set('name', 'John'); 
myMap.set('age', 30);console.log(myMap.get('name')); // Output: 'John' 
console.log(myMap.get('age')); // Output: 30