What does new binding do to this? What happens internally when you use new?

Q: What does new binding do to this? What happens internally when you use new?

When a function is called with the `new` keyword, the following steps occur internally: (1) a new empty object is created, (2) the `this` inside the function is bound to this new object, (3) the object's prototype is set to the function's `prototype` property, (4) the function is executed with `this` set to the new object, and (5) if the function doesn't return an object, the new object is returned. Example: `function Car(model) { this.model = model; } const tesla = new Car('Model S'); console.log(tesla.model); // 'Model S'`.

Difficulty: 5/10

this binding, constructor behavior, prototype chain

`new` binding creates a new empty object, sets that object as `this`, links the object to the function's prototype, executes the function, and returns the object (unless the function returns another object).

When a function is called with the new keyword, the following steps occur internally: (1) a new empty object is created, (2) the this inside the function is bound to this new object, (3) the object's prototype is set to the function's prototype property, (4) the function is executed with this set to the new object, and (5) if the function doesn't return an object, the new object is returned. Example: function Car(model) { this.model = model; } const tesla = new Car('Model S'); console.log(tesla.model); // 'Model S'.

Scenario Questions

0-2 years experience

Follow-up Questions

Difficulty: 5/10

this binding, constructor behavior, prototype chain

`new` binding creates a new empty object, sets that object as `this`, links the object to the function's prototype, executes the function, and returns the object (unless the function returns another object).

Scenario Questions

0-2 years experience

What does new binding do to this? What happens internally when you use new?

new binding creates a new empty object, sets that object as this, links the object to the function's prototype, executes the function, and returns the object (unless the function returns another object).

Scenario Questions

Follow-up Questions

What does new binding do to this? What happens internally when you use new?

new binding creates a new empty object, sets that object as this, links the object to the function's prototype, executes the function, and returns the object (unless the function returns another object).

Scenario Questions

Follow-up Questions

`new` binding creates a new empty object, sets that object as `this`, links the object to the function's prototype, executes the function, and returns the object (unless the function returns another object).

`new` binding creates a new empty object, sets that object as `this`, links the object to the function's prototype, executes the function, and returns the object (unless the function returns another object).