JavaScript Tutorial for beginners

Updated:03/feb/2022 by Computer Hope

The first ever   JavaScript   was created by Brendan Eich at Netscape, and has since been updated to conform to ECMA-262 Edition 5 and later versions. This engine, code named SpiderMonkey, is implemented in C/C++ .
A versatile programming language frequently used for web development is JavaScript. It enables you to add dynamic elements and interaction to webpages.

Below is an example of a basic   HTML   web page written in HTML with a description of each section and its function.

Using the script tag, you can add JavaScript straight to an HTML document. For instance: JavaScript declares variables using the var, let, or const keywords.
JavaScript declares variables using the var, let, or const keywords. For instance:

  • var myAge = 25; // Mutable variable
  • let name = 'John'; // Mutable variable
  • const pi = 3.14; // Immutable constant

Data Types: JavaScript has several built-in data types, including:
Primitive types: number, string, boolean, null, undefined, and symbol.
Complex types: object and array.
Functions are reusable blocks of code. we can define in javascript functions using the function keyword.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "">

<title>Javascript Example page</title>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<script> alert("hello world") </script> </head>
<h1>This is a heading</h1>
<p>This is an <b>example</b> of a basic HTML page.</p>

Features of JavaScript

  • Platform Independent
  • The Syntax is Similar to C
  • Prototype-Based Object Model
  • DOM Manipulation
  • Javascript as a Client-Side Language
  • Form Validation
  • Detecting the User’s Browser and OS
  • Ability to Create Functions in the Script

Mandatory Tools you will need to install

  • you will need a Pentium 200-MHz computer with a minimum of 128 MB of RAM
  • Linux 7.1 or Windows 95/98/2000/XP operating system.
  • chrome browser
  • Microsoft Notepad or any other text editor


you can learn about more advanced concepts such as object-oriented programming, asynchronous programming with promises and async/await, manipulating the DOM, and working with APIs. You can start basic with us and explore your coding skill.

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