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React JS 19 Crash Course | Build an App and Master React in 2 Hours

Dive straight into React—from basic JSX to advanced hooks—and build a real, modern app in this hands-on crash course!

Build, Learn, and Master React 19

We’ll start with the fundamentals—JSX, props, and state—then move to advanced topics like hooks, context, and performance optimization. By the end, you’ll have built a fully functional React app from scratch.

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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.

    Master React.js

    Master React.js

    Learn React.js to create dynamic, interactive web interfaces

    Appwrite BaaS

    Appwrite BaaS

    Implement open-source backend services.

    Tailwind CSS for Modern Designs

    Tailwind CSS for Modern Designs

    Learn the utility-first CSS framework to style modern websites

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Course curriculum

React.js 19 Crash Course: Build an App & Master React in 2 Hours

Dive into modern front-end development with JSMastery.pro’s React.js 19 Crash Course, designed for beginners and developers looking to master React quickly. This 2-hour program is fast-paced, and it teaches you to build a dynamic web application using React.js 19, the industry-standard library for creating interactive user interfaces. You’ll explore core concepts like components, hooks, state management, performance optimization, and the latest React 19 features. Designed and built by expert devs and instructors, the course focuses on hands-on learning, with practical exercises and a fully functional app project to solidify your skills. You’ll learn to create responsive, performant interfaces and integrate APIs for real-world functionality. A basic understanding of JavaScript and HTML is recommended but not mandatory. With JSMastery.pro you're getting lifetime access to resources, a vibrant learner community, and a certificate of completion. This self-paced course is perfect for busy learners aiming to upskill efficiently. Whether you’re kickstarting a career in web development or enhancing your portfolio, the React.js 19 Crash Course equips you with essential skills for 2025’s tech landscape. Enroll now to master React and build professional-grade applications in just 2 hours!

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curriculum

React 19 Course

Dive straight into React—from basic JSX to advanced hooks—and build a real, modern app in this hands-on crash course!

01

Introduction

02

Crash Course

03

React Setup

04

Create React.js Project

05

Components

06

React Props

07

React Styles

08

States and Hooks

09

UseEffect Hook

10

React Snippets

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  • Jeremy McCabe

    Jeremy McCabe

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    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.
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    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.
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    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.
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    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.
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    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

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    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

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    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

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    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

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    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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3x Github Star

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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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