Localhost 3000: Learn how to use localhost:3000 for web

Learn how to use localhost:3000 for web development, start local servers with React, Node.js, Angular, and Vue.js, and troubleshoot issues. Learn what localhost : 3000 is, how to open it, and how to create a simple Node.js HTTP server on this port. Also, see your connection analysis and other localhost server pages and ports. Accidentally typed locallhost : 3000 instead of localhost : 3000 ? We'll help you redirect to the correct address and provide solutions for common development issues. In the world of web development, localhost:3000 is a popular shorthand for localhost port 3000 , the default port used by many web servers. It is often used to talk about development environments and is often the first port that web apps use to run.