This video on Callback functions in JavaScript will take you through the more profound concept of How callback functions in JavaScript are different from the traditional functions. In this tutorial, JavaScript callback functions are explained with suitable examples. In addition, you’ll also understand how JavaScript works with functions and why JavaScript is known as a single-threaded language.

Below are the points we are going to discuss in this JavaScript tutorial for beginners.
00:00:00 Introduction
00:00:51 What are callback functions in JavaScript?
00:02:21 JavaScript execution sequence.
00:05:06 Using the setTimeout() method..
00:08:23 Callback function example.

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What are callback functions in JavaScript?

A callback function is a function that is passed to another function as an argument, and that particular function will get executed later. Here later means once the system is done with the first function, it is now free to perform function two, which we kept in hold.

Introduction to JavaScript:
JavaScript is a scripting language that is used to create and manage dynamic web pages, basically anything that moves on your screen without requiring you to refresh your browser. It can be anything from animated graphics to an automatically generated Facebook timeline. When most people get interested in web development, they start with good old HTML and CSS. From there, they move on to JavaScript, which makes sense, because, these three elements together form the backbone of web development. HTML is the structure of your page like the headers, the body text, any images you want to include. It basically defines the contents of a web page. CSS controls how that page looks (it’s what you’ll use to customize fonts, background colors, etc.). JavaScript is the third element. Once you’ve created your structure (HTML) and your aesthetic vibe (CSS), JavaScript makes your site dynamic (automatically updateable).

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