Constructor Function & Prototype in Javascript

[Sagar Jaybhay]

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Constructor Function & Prototype in Javascript


What is a constructor function and what it does?
It is a function that creates an object class or the function that allows you to create multiple instances of a class very easily. Constructor function technically speaking is like a normal function but
1) They named with the capital letter first.- it is a best practice to write constructor function first name with a capital letter.
2) They should execute with the new operator.

function User(firstName,lastName,age,gender){    this.firstName=firstName;    this.lastName=lastName;    this.age=age;    this.gender=gender; } var user1=new User('Sagar','Jaybhay',30,'Male'); console.log(user1);




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[Stephan van Hulst]

So, do you have a question?

[ludoviko azuaje]

It would be better to post your question to the right forum: Javascript and related forum