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Complete Path to JavaScript Mastery

Master JavaScript, the language of the web! Learn variables, data types, functions, DOM, ES6+, async programming, and more in this hands-on course.

JavaScript Essentials: From Basics to Mastery

Get a solid foundation in JavaScript! We'll break down key concepts, explain their real-world applications, and guide you through writing and managing JavaScript code effectively..

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Value-Packed Learning Experience

Learn the essential technologies with a hands-on approach. You'll get practical knowledge, clear explanations, and the tools you need to understand and apply new skills effectively

Whether you're a beginner or looking to sharpen your skills, this journey will equip you with the knowledge and confidence to make the most out of this field.

    JavaScript for Developers

    JavaScript for Developers

    Master JavaScript to build powerful and scalable applications

    Frontend Development

    Frontend Development

    Develop effective client-side web apps.

    Write Clean Code

    Write Clean Code

    Learn best practices to write readable code.

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Course curriculum

Complete Path to JavaScript Mastery

Become a JavaScript expert with JSMastery.pro’s Complete Path to JavaScript Mastery, a comprehensive course for beginners and intermediate developers. This 25-hour per week, hands-on program takes you from JavaScript fundamentals to advanced concepts, and letting you build dynamic, professional-grade web applications. You’ll master variables, functions, async programming, ES6+ features, and modern frameworks. Designed expert instructor Adrian Hajdin, the course blends theory with practical projects, including a fully functional app to showcase in your portfolio. You’ll tackle real-world challenges like DOM manipulation, API integration, and state management, ensuring you’re job-ready. A basic understanding of HTML and CSS is helpful but not required. With the course you get lifetime access to updated knowledgebase resources, a supportive learner community on Discord, and a certificate of completion. The course is perfect for aspiring web developers or those aiming to level up. Tthe Complete Path to JavaScript Mastery equips you with in-demand skills for 2025’s tech industry. Enroll now to gain confidence in JavaScript, unlock endless career opportunities, and build cutting-edge web solutions that stand out!

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01

curriculum

Introduction to the Course

Welcome to the Complete Path to JavaScript Mastery! Discover why JavaScript is the backbone of the web and your gateway to endless opportunities.

01

Welcome to the world of JavaScript

02

Meet Adrian, Your Instructor

03

Get the Most Out of This Course

04

Where are the projects?

05

Access to a Private 24/7 Community

06

Environment Setup

07

Our Workflow

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curriculum

Operators and Equality

Dive into JavaScript operators, including arithmetic, logical, & comparison operators. Learn the difference of strict & loose.

01

Operators Intro

02

Arithmetic Operators

03

Comparison Operators and Equality

04

Strict vs Loose Equality

05

Logical Operators Part 1

06

Assignment Operators

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04

curriculum

Logic and Control Flow

Master decision-making and loops with "if" statements, truthy/falsy values, switch, the ternary operator, and for/while loops.

01

'if' Statement

02

Truthy/Falsy Values

03

Logical Operators Part 2 (&&, ||)

04

Logical Operators Part 3 (!NOT)

05

'switch' Statement

06

Ternary Operator

07

'for' and 'while' Loops

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05

curriculum

Functions

Learn how to declare, invoke, & return values from functions. Explore the difference between parameters and arguments.

01

Functions Intro

02

Declaring and Invoking Functions

03

Function Return

04

Arrow Functions

05

Parameters vs Arguments

06

Best Practices for Naming Functions in JavaScript

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curriculum

Strings in detail

Explore JavaScript strings with ease. Learn about string length, properties, case conversion, substring search, splitting, reversing, repeating, and trimming.

01

Strings Introduction

02

Length and Basic Properties

03

Change String Case

04

Searching for a Substring

05

Getting a Substring

06

Split a String

07

Reverse, Repeat, and Trim a String

08

Strings Exercise

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curriculum

Arrays in detail

Explore JavaScript arrays in detail. Master methods like forEach, map, filter, find, includes, sort, and reduce to boost your coding skills.

01

Arrays Introduction

02

Array Methods

03

Array.forEach()

04

Array.map()

05

Array.filter()

06

Array.find()

07

Array.includes()

08

Array.sort()

09

Array.some() & Array.every()

10

Array.reduce()

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curriculum

Objects in detail

Discover JavaScript objects in detail. Learn to access, add, and update properties, utilize object methods, and explore built-in object functions.

01

Objects Introduction

02

Accessing, Adding, and Updating and Object's Properties

03

Object Methods

04

Built in Object Methods

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curriculum

Tricky Concepts

Master JavaScript's scope, hoisting, and closures. Boost your coding skills with clear insights and practical examples.

01

Tricky Concepts

02

Scope in JS

03

Scope Practical Workshop

04

Hoisting

05

Closures

06

Closures Practical Workshop

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curriculum

Value vs. Reference

Understand value vs. reference in JavaScript. Learn the differences, and master techniques for shallow and deep cloning to manage data effectively.

01

Value vs Reference Introduction

02

Value vs Reference Explanation

03

Shallow Cloning

04

Deep Cloning

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curriculum

Document Object Model - DOM

Explore the Document Object Model (DOM) in JavaScript. Learn to select elements, use properties and methods, manage classes, and create, traverse, and remove nodes.

01

DOM Introduction

02

Selecting Elements

03

Element Properties and Methods

04

Working with Classes

05

Creating, Traversing and Removing Nodes

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12

curriculum

Classes & "new" / "this" keywords

Learn about JavaScript classes, the new keyword, and the this keyword. Understand how to create and use classes effectively in your code.

01

Classes Introduction

02

"new" Keyword

03

"this” Keyword

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curriculum

Asynchronous JavaScript

Master asynchronous JavaScript with intervals, timers, callbacks, promises, async/await, and the event loop. Learn to fetch API data efficiently.

01

Intervals and Timers

02

Asynchronous JavaScript Introduction

03

Async JavaScript & Callbacks Part 1

04

Async JavaScript & Callbacks Part 2

05

Promises

06

Async/Await

07

Bonus: Understanding the Event Loop

08

Bonus: API Data Fetching Project

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curriculum

Modern JavaScript from ES6 to ES2020

Explore Modern JavaScript from ES6 to ES2020. Master imports, exports, rest and spread operators, and object and array destructuring techniques.

01

ES6+ What you already know

02

Imports & Exports

03

Rest Parameters

04

Spread Syntax

05

Object & Array Destructuring

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curriculum

Clean Code Practices

Learn clean code practices in JavaScript: the importance of clean code, naming conventions, organizing code, small functions, avoiding duplication, and effective documentation.

01

Why Clean Code Matters

02

Naming Conventions

03

Organizing Code

04

Writing Small Functions

05

Avoiding Code Duplication

06

Commenting and Documentation

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16

curriculum

Next steps

Explore next steps in development. Learn frontend frameworks like React, Astro, Svelte, Vue, Angular, and dive into backend with Node.js to advance your skills.

01

Congratulations

02

Learning Frontend

03

Learning Backend

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curriculum

Additional resources

Congratulations on completing the course! Access additional resources to enhance your skills and support your journey as a JavaScript developer.

01

JavaScript Resources

02

Ultimate JavaScript CheatSheet

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Hear from our students

  • Jeremy McCabe

    Jeremy McCabe

    verified

    Software developer

    The instructor puts a heavy focus on explaining the building block concepts so you understand why you are doing what you are doing. Then all of the coding afterwards just makes more sense. I've watched his free courses on youtube and his teaching style was a big reason I paid for the full course.
  • Shahnoor Mujawar

    Shahnoor Mujawar

    verified

    Software developer

    Yesterday, I was selected as a junior backend developer without having a degree. I just passed high school, and I want to thank you because I've learned many things in web development from you. I have deep respect for you because you are changing people's lives.
  • Alvin Kuishinbō

    Alvin Kuishinbō

    verified

    Software developer

    I’ve learned production-level skills that I didn’t gain from my work experience, such as streamlining the flow of functions and server actions. We didn’t do that in my previous company, which is why it was challenging for me to add new features and manage data rendering.
  • Samad Khan

    Samad Khan

    verified

    Software developer

    Congratulations to BEST YouTuber! I'm forever grateful to your brother for creating content that helped kickstart my career as a Full Stack Dev! 4 years of experience later, I'm still thankful for the impact your videos had on me! Sending love from India.
  • Zen Abhi

    Zen Abhi

    verified

    Software developer

    Congratulations, sir! A heartfelt salute to your hard work and dedication. Thank you for transforming the lives of millions of students like me, without asking for anything in return. Because of you, I've landed a job and taken a step closer to my dreams. I will never forget the invaluable knowledge and inspiration you've given me. You didn't just teach us code; you gave us hope and a future. I only hope that one day, I can repay this unpayable debt in some meaningful way. You've changed my life forever.
  • Anyars Yussif

    Anyars Yussif

    verified

    Software developer

    When I started with the JSM Pro course, understanding file based routing, dynamic routes, extraction of params, the creation of APIs and handlers have never been this easy. Thanks to Adrian Hajdin for making technical concepts so easy to understand. I am very proud to be part of the JSM family.
  • Gourav Kumar

    Gourav Kumar

    verified

    Software developer

    I just got a job as a Software Developer because of you. Thnx for amazing videos, helped me a lot to gain much skills.
  • Musawir Raji

    Musawir Raji

    verified

    Software developer

    Adrian should be awarded best tutor of the year, the way he explain every bit of all topic is this course is so great, that it gives me better understanding of nextjs, and getting to truly understand the backend architecture is a plus for me, it used to be one of the most confusing topic since i started web development, now i have confidence to approach any Nextjs project given to me.
  • Community Member

    Community Member

    verified

    Software developer

    Hi Adrian, i hope this comment finds you well. I finally landed on my first job as a fresh grad. Your videos genuinely helps a LOT dude especially in the interview part. I learned a lot from you. Cheers homie!
View more testimonials

Instructor details

Meet Your Instructor Adrian Hajdin

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JavaScript Mastery

Be a part of a thriving learning environment with thousands of fellow students.

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250k

185k

Loved by 1,190,000+ developers

achievement

3x Github Star

Out of 150 million developers, only 70 have earned direct recognition from GitHub for elite expertise and influence.

achievement

Speaker at GitNation

Recognized as a trusted educator in the tech community, holding talks and sharing insights.

Testimonial

Jeremy McCabe

Software developer

The instructor puts a heavy focus on explaining the building block concepts so you understand why you are doing what you are doing. Then all of the coding afterwards just makes more sense. I've watched his free courses on youtube and his teaching style was a big reason I paid for the full course.

Testimonial

Alvin Kuishinbō

Software developer

I've learned production-level skills that I didn't gain from my work experience, such as streamlining the flow of functions and server actions. We didn't do tha

Testimonial

Samad Khan

Software developer

Congratulations to BEST YouTuber! I'm forever grateful to your brother for creating content that helped kickstart my career as a Full Stack Dev! 4 years of experience later, I'm still thankful for the impact your videos had on me! Sending love from India.

Testimonial

Zen Abhi

Software developer

Congratulations, sir! A heartfelt salute to your hard work and dedication. Thank you for transforming the lives of millions of students like me, without asking for anything in return. Because of you, I've landed a job and taken a step closer to my dreams. I will never forget the invaluable knowledge and inspiration you've given me. You didn't just teach us code; you gave us hope and a future. I only hope that one day, I can repay this unpayable debt in some meaningful way. You've changed my life forever.

Testimonial

Anyars Yussif

Software developer

When I started with the JSM Pro course, understanding file based routing, dynamic routes, extraction of params, the creation of APIs and handlers have never been this easy. Thanks to Adrian Hajdin for making technical concepts so easy to understand. I am very proud to be part of the JSM family.

Testimonial

Gourav Kumar

Software developer

I just got a job as a Software Developer because of you. Thnx for amazing videos, helped me a lot to gain much skills.

Testimonial

Musawir Raji

Software developer

Adrian should be awarded best tutor of the year, the way he explain every bit of all topic is this course is so great, that it gives me better understanding of nextjs, and getting to truly understand the backend architecture is a plus for me, it used to be one of the most confusing topic since i started web development, now i have confidence to approach any Nextjs project given to me.

Testimonial

Community Member

Software developer

Hi Adrian, i hope this comment finds you well. I finally landed on my first job as a fresh grad. Your videos genuinely helps a LOT dude especially in the interview part. I learned a lot from you. Cheers homie!

Testimonial

Jeremy McCabe

Software developer

The instructor puts a heavy focus on explaining the building block concepts so you understand why you are doing what you are doing. Then all of the coding afterwards just makes more sense. I've watched his free courses on youtube and his teaching style was a big reason I paid for the full course.

Testimonial

Alvin Kuishinbō

Software developer

I've learned production-level skills that I didn't gain from my work experience, such as streamlining the flow of functions and server actions. We didn't do tha

Testimonial

Samad Khan

Software developer

Congratulations to BEST YouTuber! I'm forever grateful to your brother for creating content that helped kickstart my career as a Full Stack Dev! 4 years of experience later, I'm still thankful for the impact your videos had on me! Sending love from India.

Testimonial

Zen Abhi

Software developer

Congratulations, sir! A heartfelt salute to your hard work and dedication. Thank you for transforming the lives of millions of students like me, without asking for anything in return. Because of you, I've landed a job and taken a step closer to my dreams. I will never forget the invaluable knowledge and inspiration you've given me. You didn't just teach us code; you gave us hope and a future. I only hope that one day, I can repay this unpayable debt in some meaningful way. You've changed my life forever.

Testimonial

Anyars Yussif

Software developer

When I started with the JSM Pro course, understanding file based routing, dynamic routes, extraction of params, the creation of APIs and handlers have never been this easy. Thanks to Adrian Hajdin for making technical concepts so easy to understand. I am very proud to be part of the JSM family.

Testimonial

Gourav Kumar

Software developer

I just got a job as a Software Developer because of you. Thnx for amazing videos, helped me a lot to gain much skills.

Testimonial

Musawir Raji

Software developer

Adrian should be awarded best tutor of the year, the way he explain every bit of all topic is this course is so great, that it gives me better understanding of nextjs, and getting to truly understand the backend architecture is a plus for me, it used to be one of the most confusing topic since i started web development, now i have confidence to approach any Nextjs project given to me.

Testimonial

Community Member

Software developer

Hi Adrian, i hope this comment finds you well. I finally landed on my first job as a fresh grad. Your videos genuinely helps a LOT dude especially in the interview part. I learned a lot from you. Cheers homie!

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