Introduction to JavaScript: First Steps

This beginner-level course covers JavaScript fundamentals (variables, operators, functions, arrays, objects, loops) to prepare you for advanced learning.

Beginner

27 Lessons

Certificate of Completion

This beginner-level course covers JavaScript fundamentals (variables, operators, functions, arrays, objects, loops) to prepare you for advanced learning.

AI-POWERED

Explanations

AI-POWERED

Explanations

This course includes

85 Playgrounds

13 Challenges

11 Quizzes

This course includes

85 Playgrounds

13 Challenges

11 Quizzes

Course Overview

This is an introduction to JavaScript for the complete beginner. It'll provide the fundamentals of the language. Topics include variables, operators, functions, arrays, objects, and loops. After this course, you should be ready to further your learning through advanced courses or other resources. There is NO installation required for this course. Code can be viewed and run directly from the lessons. This course has been created by Arnav Aggarwal, a full-stack engineer. Arnav has attended a coding boot cam...Show More

TAKEAWAY SKILLS

Javascript

Programming Language

Data Structures

What You'll Learn

Students will learn the basics of programming with JavaScript for web development.

What You'll Learn

Students will learn the basics of programming with JavaScript for web development.

Course Content

Introduction

This chapter emphasizes the simplicity of starting with JavaScript and the importance of comments in code for clarity and organization.

Introduction - Just Get Started

Comments

Variables

This chapter covers JavaScript variable creation, naming, types (numbers, strings, booleans, null, undefined), usage, and outputting with console.log.

Creating & Naming Variables

Numbers, Strings & Booleans

Working with variables

Null & Undefined

Operators & if-statements

This chapter covers math operators, string manipulation, if-statements, truthy/falsey values, comparison operators, and logical operators.

Operators: +, -, *, /, %

Using Operators with Different Types

Introduction to if-statements

if-statements, continued

Logical Operators: !, ||, &&

Comparison Operators: <, >, <=, >=, ==, ===, !=, !==

Functions

This chapter covers function definition, arguments, return values, and practical application.

Introduction to Functions

Function Arguments

Return Statements

Function Practice

Arrays

This chapter covers array creation, element access, and manipulation using array functions.

Arrays, Part 0

Arrays, Part 1 : Methods

Objects

2 Lessons

This chapter covers object creation, key-value pairs, and differences from other data types.

Loops

5 Lessons

This chapter explores for, while, and for-in loops, emphasizing practical data manipulation.

Conclusion

2 Lessons

This chapter concludes the course with encouragement for further learning, backed by positive testimonials on content clarity.

Course Author

Trusted by 1.4 million developers working at companies

Anthony Walker

@_webarchitect_

Evan Dunbar

ML Engineer

Carlos Matias La Borde

Software Developer

Souvik Kundu

Front-end Developer

Vinay Krishnaiah

Software Developer

Eric Downs

Musician/Entrepeneur

Kenan Eyvazov

DevOps Engineer

Souvik Kundu

Front-end Developer

Eric Downs

Musician/Entrepeneur

Anthony Walker

@_webarchitect_

Evan Dunbar

ML Engineer

Hands-on Learning Powered by AI

See how Educative uses AI to make your learning more immersive than ever before.

Instant Code Feedback

Evaluate and debug your code with the click of a button. Get real-time feedback on test cases, including time and space complexity of your solutions.

AI-Powered Mock Interviews

Put your skills to the test in a simulated interview setting. Receive personalized feedback based on your performance. Available in Premium & Premium Plus plans.

Adaptive Learning

At various checkpoints throughout Educative courses, you will be prompted to take a quick assessment. Receive a condensed curriculum tailored to your strengths and skill gaps.

Explain with AI

Select any text within any Educative course, and get an instant explanation — without ever leaving your browser.

AI Code Mentor

AI Code Mentor helps you quickly identify errors in your code, learn from your mistakes, and nudge you in the right direction — just like a 1:1 tutor!