Constructor Functions

In traditional OO languages, constructor functions are a normal part of the code. Constructor functions are denoted by a capital letter by practice. Constructor functions look like “regular functions, but behave differently. Here is an example…

function Animal(name){
    this.animalName = name;
}
let gorilla = new Animal(‘Bongo’); 

Notice the capital “A”. That is a JavaScript constructor function convention. Also, notice we are using the “new” keyword. This instantiates the new object based upon the constructor function. We can even pass information to it like we are doing here. What about constructor function methods?

function Animal(name){
    this.animalName = name;
    this.grunt = function(){
        console.log(‘ugh!’);
    };
}
let gorilla = new Animal(‘Bongo’); gorilla.grunt();

The output will be “ugh!”.

Happy Coding!

Clay Hess

More To Explore

Code

The Contact Picker API: Fast, private access to a user’s address book

The Contact Picker API lets mobile web apps open the native contacts chooser so users can share exactly the fields you request—like name, phone, email, address, or avatar—without granting blanket access to their entire address book. It’s user-initiated, privacy-preserving, and perfect for speeding up invites and form fills.

Share This Post

small_c_popup.png

Need help?

Let's have a chat...


Login

Jump Back In!

Here at Webolution Designs, we love to learn. This includes sharing things we have learned with you. 

Register

Begin Your Learning Journey Today!

Come back inside to continue your learning journey.