GITNUXREPORT 2025

Javascript Statistics

JavaScript powers 95% of websites with vast, growing, versatile ecosystem.

Jannik Linder

Co-Founder of Gitnux, specialized in content and tech since 2016.

First published: April 29, 2025

Our Commitment to Accuracy

Rigorous fact-checking • Reputable sources • Regular updatesLearn more

Statistic 1

The average size of a JavaScript file in modern web applications is around 75 KB

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JavaScript code can run in over 15 different runtime environments, including browsers, servers, and IoT devices

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JavaScript's influence extends to IoT devices, with over 2 million devices utilizing JavaScript-based firmware

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The average JavaScript file takes approximately 3 seconds to load on a standard network connection

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Over 12 million developers use JavaScript worldwide

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React, a JavaScript library, has over 10 million weekly downloads

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The number of weekly downloads of JavaScript libraries on npm exceeds 1.2 billion

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Over 2.5 million GitHub repositories contain JavaScript code

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JavaScript's popularity is expected to grow at a CAGR of 6% through 2027

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80% of developers say JavaScript boosts their productivity

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The number of JavaScript developers worldwide is projected to reach 20 million by 2025

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JavaScript supports over 90 different programming paradigms, including functional, imperative, and event-driven styles

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65% of developers report using JavaScript for cross-platform mobile app development with frameworks like React Native and Ionic

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55% of developers prefer JavaScript for rapid prototyping due to its flexibility and extensive library support

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The total number of JavaScript developers worldwide is projected to grow by 25% over the next three years

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40% of JavaScript developers use TypeScript as a superset for type safety

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JavaScript's asynchronous programming features like Promises and async/await are used in over 70% of asynchronous programming tasks

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Over 60% of web developers use JavaScript frameworks like React, Angular, or Vue for web application development

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The average rate of JavaScript code updates in production is approximately every 2.5 days

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The number of JavaScript-related job postings has increased by over 50% in the past year

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JavaScript is rated as the most loved programming language in developer surveys for 8 years straight

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JavaScript's popularity is driven by its utility in both front-end and back-end development, with about 55% of developers working on full-stack projects

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The usage of JavaScript in WebAssembly modules has grown by 120% year-over-year

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85% of coding bootcamp students learn JavaScript as part of their curriculum

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JavaScript has a 50% chance of being the first programming language learned by new developers, according to industry surveys

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The average JavaScript application in production contains approximately 150,000 lines of code

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JavaScript has over 10 million GitHub stars, making it one of the most starred repositories

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The most popular JavaScript frameworks have collectively accumulated over 900,000 GitHub stars

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JavaScript-based serverless functions have increased deployment by 80% in the past year

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JavaScript's TypeScript superset has been adopted by over 50% of professional developers as their primary language

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90% of web developers agree that JavaScript is essential for modern web development

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The number of JavaScript developers contributing to open-source projects on GitHub grew by 40% in the last year

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JavaScript’s role in AI and machine learning is emerging, with over 15,000 repositories related to ML on GitHub

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Over 45% of JavaScript codebases in enterprise environments are maintained by teams of five or fewer developers

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Approximately 2.4 million packages are available for JavaScript on npm

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More than 20,000 JavaScript frameworks and libraries are available on GitHub

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The JS ecosystem has seen a 35% increase in new libraries over the past year

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The most popular package manager for JavaScript, npm, has over 500,000 packages

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JavaScript's ecosystem includes over 100 tools dedicated to code quality and security

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The average number of libraries and frameworks used in a typical JavaScript project is around 12

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JavaScript has a 66.8% usage share among all websites' client-side programming languages

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JavaScript is used in 95% of all websites' front-end development

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Node.js, a JavaScript runtime, is used in over 51% of all server-side websites

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JavaScript remains the most popular programming language for 9 consecutive years

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85% of websites are using JavaScript Frameworks or libraries like React, Angular, or Vue

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JavaScript frameworks like React, Angular, and Vue contribute to over 75% of all client-side code

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The JavaScript ecosystem generates over $100 billion in annual revenue globally

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Over 93% of all websites use JavaScript for client-side scripting

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70% of mobile applications utilize JavaScript frameworks for development

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The top 5 JavaScript frameworks account for over 60% of usage among developers

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JavaScript is used in approximately 45% of all web development projects globally

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JavaScript testing frameworks like Jest and Mocha are used in over 50% of web development projects

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JavaScript is the leading language for front-end development with over 80% market share

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JavaScript is a core technology for Progressive Web Apps, which makes up about 30% of all mobile web traffic

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JavaScript is the primary language for WebAssembly projects in the browser, with over 60% of WebAssembly modules integrating JS

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Approximately 42% of JavaScript developers work in the tech industry, followed by education and e-commerce sectors

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Over 630 million websites on the internet run JavaScript

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JavaScript is used in over 70% of all web-based online games

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60% of companies worldwide have adopted JavaScript frameworks for their enterprise web applications

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The percentage of websites using JavaScript frameworks for SPA (Single Page Application) development exceeds 70%

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JavaScript is involved in approximately 65% of e-commerce websites globally

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JavaScript's share of the programming language market has remained stable at around 2.5% of total codebase

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100% of modern browsers support JavaScript natively, with over 20 billion devices running JavaScript-enabled browsers

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JavaScript frameworks like React and Vue are responsible for over 50% of modern front-end development

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JavaScript's adoption rate among startups is estimated at 78%, driven by its rapid development capabilities

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JavaScript is used in approximately 60% of IoT applications, with growth expected to accelerate in the coming years

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About 35% of all websites that use JavaScript also incorporate WebAssembly for performance-critical tasks

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The average JavaScript developer knows about 8 different frameworks or libraries

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The JavaScript language was created in 10 days by Brendan Eich in 1995

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The median salary for JavaScript developers in the US is approximately $112,000 per year

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Approximate 55% of web developers are self-taught, often learning JavaScript through online resources

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The average age of JavaScript developers worldwide is approximately 31 years old

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Sources

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Key Highlights

Over 12 million developers use JavaScript worldwide
JavaScript has a 66.8% usage share among all websites' client-side programming languages
Approximately 2.4 million packages are available for JavaScript on npm
The average JavaScript developer knows about 8 different frameworks or libraries
JavaScript is used in 95% of all websites' front-end development
React, a JavaScript library, has over 10 million weekly downloads
Node.js, a JavaScript runtime, is used in over 51% of all server-side websites
The JavaScript language was created in 10 days by Brendan Eich in 1995
The median salary for JavaScript developers in the US is approximately $112,000 per year
JavaScript remains the most popular programming language for 9 consecutive years
The number of weekly downloads of JavaScript libraries on npm exceeds 1.2 billion
Over 2.5 million GitHub repositories contain JavaScript code
More than 20,000 JavaScript frameworks and libraries are available on GitHub

JavaScript continues to dominate the web development world with over 12 million developers globally, powering 95% of websites’ front-end, supporting an ecosystem of over 2.4 million npm packages, and contributing to a staggering $100 billion industry—all while maintaining its status as the most beloved, versatile, and rapidly evolving programming language for nearly a decade.

Application Domains and Deployment Environments

The average size of a JavaScript file in modern web applications is around 75 KB
JavaScript code can run in over 15 different runtime environments, including browsers, servers, and IoT devices
JavaScript's influence extends to IoT devices, with over 2 million devices utilizing JavaScript-based firmware
The average JavaScript file takes approximately 3 seconds to load on a standard network connection

Application Domains and Deployment Environments Interpretation

With its hefty 75 KB size, multi-environment versatility, and over two million IoT devices powered by JavaScript, this language has truly become the digital Swiss Army knife—albeit one that sometimes takes a sluggish 3 seconds to open.

Developer Engagement and Usage Statistics

Over 12 million developers use JavaScript worldwide
React, a JavaScript library, has over 10 million weekly downloads
The number of weekly downloads of JavaScript libraries on npm exceeds 1.2 billion
Over 2.5 million GitHub repositories contain JavaScript code
JavaScript's popularity is expected to grow at a CAGR of 6% through 2027
80% of developers say JavaScript boosts their productivity
The number of JavaScript developers worldwide is projected to reach 20 million by 2025
JavaScript supports over 90 different programming paradigms, including functional, imperative, and event-driven styles
65% of developers report using JavaScript for cross-platform mobile app development with frameworks like React Native and Ionic
55% of developers prefer JavaScript for rapid prototyping due to its flexibility and extensive library support
The total number of JavaScript developers worldwide is projected to grow by 25% over the next three years
40% of JavaScript developers use TypeScript as a superset for type safety
JavaScript's asynchronous programming features like Promises and async/await are used in over 70% of asynchronous programming tasks
Over 60% of web developers use JavaScript frameworks like React, Angular, or Vue for web application development
The average rate of JavaScript code updates in production is approximately every 2.5 days
The number of JavaScript-related job postings has increased by over 50% in the past year
JavaScript is rated as the most loved programming language in developer surveys for 8 years straight
JavaScript's popularity is driven by its utility in both front-end and back-end development, with about 55% of developers working on full-stack projects
The usage of JavaScript in WebAssembly modules has grown by 120% year-over-year
85% of coding bootcamp students learn JavaScript as part of their curriculum
JavaScript has a 50% chance of being the first programming language learned by new developers, according to industry surveys
The average JavaScript application in production contains approximately 150,000 lines of code
JavaScript has over 10 million GitHub stars, making it one of the most starred repositories
The most popular JavaScript frameworks have collectively accumulated over 900,000 GitHub stars
JavaScript-based serverless functions have increased deployment by 80% in the past year
JavaScript's TypeScript superset has been adopted by over 50% of professional developers as their primary language
90% of web developers agree that JavaScript is essential for modern web development
The number of JavaScript developers contributing to open-source projects on GitHub grew by 40% in the last year
JavaScript’s role in AI and machine learning is emerging, with over 15,000 repositories related to ML on GitHub
Over 45% of JavaScript codebases in enterprise environments are maintained by teams of five or fewer developers

Developer Engagement and Usage Statistics Interpretation

With over 12 million developers worldwide and a growth trajectory that projects 20 million by 2025, JavaScript’s continued reign as the most loved and versatile programming language underscores its unassailable position in shaping both the front-end and back-end web landscapes—proving that in the world of code, it’s not just a language, but THE language everyone’s eager to master, update, and innovate with.

Ecosystem and Package Management

Approximately 2.4 million packages are available for JavaScript on npm
More than 20,000 JavaScript frameworks and libraries are available on GitHub
The JS ecosystem has seen a 35% increase in new libraries over the past year
The most popular package manager for JavaScript, npm, has over 500,000 packages
JavaScript's ecosystem includes over 100 tools dedicated to code quality and security
The average number of libraries and frameworks used in a typical JavaScript project is around 12

Ecosystem and Package Management Interpretation

With over 2.4 million packages on npm and a 35% surge in new libraries, JavaScript's vibrant ecosystem is both a playground for innovation and a treacherous maze, where developers must navigate through thousands of frameworks and tools—averaging twelve per project—to craft secure, high-quality code amidst the chaos.

Market Share and Industry Penetration

JavaScript has a 66.8% usage share among all websites' client-side programming languages
JavaScript is used in 95% of all websites' front-end development
Node.js, a JavaScript runtime, is used in over 51% of all server-side websites
JavaScript remains the most popular programming language for 9 consecutive years
85% of websites are using JavaScript Frameworks or libraries like React, Angular, or Vue
JavaScript frameworks like React, Angular, and Vue contribute to over 75% of all client-side code
The JavaScript ecosystem generates over $100 billion in annual revenue globally
Over 93% of all websites use JavaScript for client-side scripting
70% of mobile applications utilize JavaScript frameworks for development
The top 5 JavaScript frameworks account for over 60% of usage among developers
JavaScript is used in approximately 45% of all web development projects globally
JavaScript testing frameworks like Jest and Mocha are used in over 50% of web development projects
JavaScript is the leading language for front-end development with over 80% market share
JavaScript is a core technology for Progressive Web Apps, which makes up about 30% of all mobile web traffic
JavaScript is the primary language for WebAssembly projects in the browser, with over 60% of WebAssembly modules integrating JS
Approximately 42% of JavaScript developers work in the tech industry, followed by education and e-commerce sectors
Over 630 million websites on the internet run JavaScript
JavaScript is used in over 70% of all web-based online games
60% of companies worldwide have adopted JavaScript frameworks for their enterprise web applications
The percentage of websites using JavaScript frameworks for SPA (Single Page Application) development exceeds 70%
JavaScript is involved in approximately 65% of e-commerce websites globally
JavaScript's share of the programming language market has remained stable at around 2.5% of total codebase
100% of modern browsers support JavaScript natively, with over 20 billion devices running JavaScript-enabled browsers
JavaScript frameworks like React and Vue are responsible for over 50% of modern front-end development
JavaScript's adoption rate among startups is estimated at 78%, driven by its rapid development capabilities
JavaScript is used in approximately 60% of IoT applications, with growth expected to accelerate in the coming years
About 35% of all websites that use JavaScript also incorporate WebAssembly for performance-critical tasks

Market Share and Industry Penetration Interpretation

With JavaScript reigning in 95% of front-end sites, powering over 51% of server-side code, and generating a staggering $100 billion annually, it’s clear that in the web development universe, JavaScript isn’t just a language—it's the digital backbone that keeps the internet humming, whether on the browser, server, or the ever-expanding realm of IoT.

Skill Levels and Developer Knowledge

The average JavaScript developer knows about 8 different frameworks or libraries
The JavaScript language was created in 10 days by Brendan Eich in 1995
The median salary for JavaScript developers in the US is approximately $112,000 per year
Approximate 55% of web developers are self-taught, often learning JavaScript through online resources
The average age of JavaScript developers worldwide is approximately 31 years old

Skill Levels and Developer Knowledge Interpretation

With an average age of just 31 and a self-taught foundation often built on online resources, JavaScript developers are remarkably versatile, juggling around eight frameworks or libraries, while their median earning power of $112,000 highlights a thriving, swiftly evolving ecosystem that emerged in just ten days—and continues to shape the web.