MCQ Single Best Answer Easy

QWhat would the following JavaScript code produce?
var o = new F();
o.constructor === F

ID: #4990 Javascript Classes MCQ 148 views
Question Info
#4990Q ID
EasyDifficulty
Javascript Classes MCQTopic

Choose the Best Option

Click any option to instantly check if you're correct.

  • A false
  • B true
  • D 1
Correct Answer: Option B

Explanation

In object-oriented programming, a constructor is a special method that is used to create and initialize an object created from a class.

In the example you provided, the Person class has a constructor function defined with the constructor keyword.
The constructor function takes a name parameter and assigns it to the name property of the object being created.

An object can be created from a class using the new keyword, followed by the name of the class and parentheses.
When an object is created using the new keyword, the class's constructor function is automatically called to initialize the object.
For example:
const person1 = new Person('Alice');
const person2 = new Person('Bob');
Here, two objects are created from the Person class using the new keyword. This causes the class's constructor function to be called twice, once for each object, initializing each object with its own name property.
So in this example, both statements const person1 = new Person('Alice'); and const person2 = new Person('Bob'); create an instance of the Person class, also known as an object

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