# Learn JavaScript: Code Offline > 튜토리얼, 코딩 예제, 퀴즈 및 오프라인 연습을 통해 자바스크립트를 배우세요. Canonical page: [https://chrome-stats.com/d/com.code.jupiter.learnjavascript?hl=ko](https://chrome-stats.com/d/com.code.jupiter.learnjavascript?hl=ko) ## Overview - **ID:** `com.code.jupiter.learnjavascript` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Code Jupiter - **Category:** EDUCATION - **Downloads:** 133,260 - **Rating:** 4.39 / 5 (1,018 ratings) - **Version:** 8.0 - **Last updated:** 2026-10-06 - **First published:** 2019-05-07 - **Publisher country:** IN - **Size:** 11 MB - **Data as of:** 2026-11-04 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.code.jupiter.learnjavascript) - **Website:** [https://codejupiter.in/](https://codejupiter.in/) - **Privacy policy:** [https://sites.google.com/view/code-javascript-privacy/home](https://sites.google.com/view/code-javascript-privacy/home) ## Description Learn JavaScript from Beginner to Advanced

Learn JavaScript step by step with clear lessons, practical code examples, daily quizzes, interview questions, and an offline coding playground.

Whether you are starting programming, studying web development, preparing for exams, or getting ready for a JavaScript developer interview, Code Jupiter helps you learn and practice JavaScript on your mobile device.

Learn JavaScript Fundamentals

Build a strong programming foundation with structured lessons covering:

• JavaScript syntax, variables, and data types
• let, const, and var
• Operators, expressions, conditions, and loops
• Functions, scope, and arrow functions
• Arrays, objects, strings, numbers, dates, and Math
• DOM and browser APIs
• Form validation and regular expressions
• JSON and template literals
• Destructuring, spread, and rest operators
• map, filter, reduce, and forEach
• Modern ES6+ JavaScript

Explore Advanced JavaScript

Go beyond the basics with lessons on:

• Object-oriented programming, classes, and inheritance
• Prototypes, encapsulation, and polymorphism
• Closures and lexical scope
• Asynchronous JavaScript and the event loop
• Promises and async/await
• Fetch API and HTTP requests
• ES6 modules
• localStorage and sessionStorage
• Debouncing and throttling
• Optional chaining and nullish coalescing
• Error handling

Practice with JavaScript Programs

Improve your coding logic with practical programs and examples covering algorithms, arrays, strings, numbers, patterns, DOM interaction, timers, local storage, to-do apps, APIs, and Fetch.

Code in the Offline Playground

Write, run, and test JavaScript directly in the app. Use the Program Playground to practice coding without installing a separate development environment. Learn and code even when you do not have an internet connection.

Build a Daily Learning Habit

Stay consistent with tools designed to make learning easier:

• Take a daily JavaScript quiz
• Maintain your learning streak
• Bookmark important lessons and programs
• Track your reading progress
• Follow structured lessons from basic to advanced

Use the daily quiz to revise concepts, test your understanding, and return to JavaScript practice every day.

Prepare for JavaScript Interviews

Review commonly asked JavaScript and Node.js interview questions with clear explanations. The app is useful for students, beginners, frontend developers, and learners working toward full-stack development.

Who Is This App For?

• Students learning JavaScript
• Beginners learning programming
• Web and frontend development learners
• Developers revising JavaScript concepts
• Students preparing for exams
• Learners preparing for technical interviews

Learn JavaScript anytime, anywhere, online or offline. Start with the basics, practice real code, take a daily quiz, and build your JavaScript skills step by step. ## Rankings - #184,091 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_ADSERVICES_TOPICS` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.INTERNET` - `android.permission.WAKE_LOCK` - `com.code.jupiter.learnjavascript.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.google.android.gms.permission.AD_ID` ## Review summary Reviews are overwhelmingly positive, with users often saying the app helps them learn JavaScript and presents material clearly. No specific complaint appears in multiple reviews; mentions of wanting videos, beginner coding exercises, or a different editor are isolated. ### Pros - Helpful for learning JavaScript, especially for beginners. - Course content is easy to understand. - Many users describe the app as a good, useful, or enjoyable learning tool. ## Similar extensions and apps - [Learn JavaScript Code Offline](https://chrome-stats.com/d/com.pejoal.learn_js) — 5,974 users, 5.00 / 5 - [Learn JavaScript: Code & IDE](https://chrome-stats.com/d/com.getinfotoyou.learnjavascript.pro) — 4 users - [Learn JavaScript: Learn & Code](https://chrome-stats.com/d/com.codepoint.learnjavascript) — 66,205 users, 4.56 / 5 - [Learn JavaScript: Code & Build](https://chrome-stats.com/d/com.coddykit.javascript.academy) — 2,177 users - [Learn JavaScript](https://chrome-stats.com/d/com.codeliber.js) — 747,443 users, 4.63 / 5 - [JavaScript](https://chrome-stats.com/d/com.pkj.javascript1) — 6,042 users, 3.00 / 5 - [Learn JavaScript - Pro](https://chrome-stats.com/d/com.codeliber.jspro) — 6,084 users, 4.61 / 5 - [Learn JavaScript - JS Course](https://chrome-stats.com/d/com.learnsimpli.learnjs) — 1,247 users - [Edoc: Learn JS](https://chrome-stats.com/d/com.edoc.js) — 132 users - [JavaScript Master: Learn JS](https://chrome-stats.com/d/com.devv.javascriptmaster) — 1 users - [Learn JavaScript](https://chrome-stats.com/d/com.skyapper.learnjavascript) — 21,345 users - [Learn To Code (JS)](https://chrome-stats.com/d/com.japangor.learnjs) — 2,283 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.code.jupiter.learnjavascript?hl=ko)