Javascript

In this tutorial, we will see how to Create Objects in JavaScript. Objects provide a way to group several values into a single value. The object internally uses a collection of key-value pairs to store values. JavaScript has several ways by which you can create an object. Let us explore that in detail.

An object literal in JavaScript allows us to create plain JavaScript objects. It consists of a list of key-value pairs, each separated by a comma and wrapped inside curly braces.

this in JavaScript is an object. Every JavaScript function gets a copy of this (except arrow functions). Its value does not depend on where we declare it but depends on how we invoke it. There are four ways in which we can invoke a function. Function invocation, method invocation, Constructor invocation & Explicit invocation. Each of these invocations will assign different this to the function. In this tutorial, we will dive deep into the this and learn more about it.

Javascript object Constructor function allows us to create multiple similar objects easily. We invoke the constructor function using the new operator. In this tutorial, let us learn what is a constructor function, how to create a constructor, how to create multiple objects using the constructor function, and the role of the new operator in invoking the constructor function.

Arrow functions in JavaScript use a concise syntax to create function expressions. JavaScript introduced it as part of ES6 specifications. This article walks you through what Arrow function is, how to create it, and some of its use cases and pitfalls. We also look at how arrow function resolves this and how it is different from a regular function.