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JavaScript Crash Course for Beginners
Rating: 4.5 out of 5(389 ratings)
11,192 students

JavaScript Crash Course for Beginners

JavaScript | ES6 | ES2015 | Object Oriented Programming | Functions
Created byWeb Academy by Harsha Vardhan
Last updated 6/2026
English
English

What you'll learn

  • Understanding what is JavaScript & Why to use JavaScript
  • JavaScript Variables
  • If, Loops (While and For loop)
  • Let
  • Functions
  • Objects

Course content

4 sections • 13 lectures • 2h 2m total length

  • Introduction to JavaScript9:14

    Learn how JavaScript brings interactivity to webpages by manipulating HTML elements, handling user events, and running in browsers or via Node.js, guided by the ECMAScript specification.

  • JavaScript First Example9:01

    Explore how to run JavaScript in three ways—internal script, external script, and Node.js—by creating a first.js, using console.log and functions, then executing with node for top-to-bottom output.

  • Variables12:39

    Declare variables in JavaScript using var to create memory locations that store values for calculations, noting that variables default to undefined and can hold numbers, strings, booleans, objects, arrays.

  • JavaScript Operators5:15

    Explore JavaScript operators across arithmetic, assignment, increment and decrement, relational, logical, and concatenation, including plus, minus, asterisk, slash, modulus and the nuances of prefix and postfix forms.

  • If7:45

    learn to use the simple if statement to control code execution by condition. see how true and false branches produce pass or fail messages when the minimum is 35.

  • If-Else5:30

    Learn how the if-else statement evaluates a condition to run the true block or the false block, with practical examples and code demonstrations for beginners.

  • While11:57

    Master the while loop in JavaScript by seeing how it checks a condition, repeats a block, and stops when false, with an example printing 1 to 5 and noting breakpoints.

  • For9:37

    Master the for loop in JavaScript by placing initialization, condition, and incrementation in one line. Use it when you know the number of iterations, with examples like 1 to 5.

  • Let11:07

    Explore the difference between let and var in javascript, highlighting block-level scope, global and local variables, and how es2015 emphasizes using let for block-scoped declarations in loops and blocks.

Requirements

  • Basic knowledge of any one programming language (optional)

Description

This is the JavaScript course for beginners which covers basics of JavaScript.

You will understand the following topics:

  • Introduction to JavaScript

  • Variables

  • Operators

  • If, Loops

  • Let

  • Basics of JavaScript Functions

  • Basics of JavaScript Objects


Since free courses can be of maximum of 2 hrs, we can't cover more topics in this course.

You can expect only basics of JavaScript in this course - like how can you write simple programs in JS like you can store some values in variables; you can perform calculations using operators.

You can check conditions and execute the code using "if".

You can execute the code repeatedly using while / for loops.

You can create re-usable code using "functions" and invoke the same; and also pass input values to function using arguments.

You can create a structure of data using JavaScript objects with properties and methods.


Important Points about this course:

  • This course doesn't cover any live projects.

  • You can't access Q&A in free courses. If you enroll in paid course, you can access Q&A; so that you can get help from the Instructor if you stuck up at coding problem or if you have any other doubts.

  • This course doesn't provide any live project.

  • This course doesn't provide any assignments / exercises.


This course is a subset of my advanced course called "Web Development | HTML | CSS | JavaScript | jQuery | NodeJS", which covers all essentials of web development - includes HTML5, CSS3, JavaScript, ES2015, jQuery, NodeJS, Bootstrap with a Live project called "India Tourism" website.



About JavaScript (Wiki):

JavaScript often abbreviated as JS, is a programming language that conforms to the ECMAScript specification. JavaScript is high-level, often just-in-time compiled, and multi-paradigm. It has curly-bracket syntax, dynamic typing, prototype-based object-orientation, and first-class functions.


Alongside HTML and CSS, JavaScript is one of the core technologies of the World Wide Web. JavaScript enables interactive web pages and is an essential part of web applications. The vast majority of websites use it for client-side page behavior, and all major web browsers have a dedicated JavaScript engine to execute it.


As a multi-paradigm language, JavaScript supports event-driven, functional, and imperative programming styles. It has application programming interfaces (APIs) for working with text, dates, regular expressions, standard data structures, and the Document Object Model (DOM).



This course is offered by Web Academy by Harsha Vardhan. Any watermark stating "Harsha Web University" is from our old branding and does not represent an academic institution. This course is for educational purposes only and is not affiliated with any university or degree-granting institution.

Who this course is for:

  • JavaScript Beginners

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