How to Use the New Keyword in JavaScript?

The “new” keyword in JavaScript is used to create an instance of an object. It creates an object with the specified type and sets its proto property to the prototype of the constructor function.

Here’s an example to demonstrate the usage of the “new” keyword in JavaScript:

function Person(name, age) {
  this.name = name;
  this.age = age;
}

var person1 = new Person("John Doe", 30);
console.log(person1.name); // Output: John Doe
console.log(person1.age); // Output: 30

In the example above, the Person function is a constructor function that is used to create a new Person object. The new keyword creates a new instance of the Person object and assigns it to the variable person1. The properties name and age are then set to the values passed as arguments.

It is important to note that the “new” keyword changes the way a function is executed. When a function is called using the “new” keyword, it is executed in the context of the new object, and the this keyword refers to the new object.