layout api version 4x title Express 4.x - Riferimento API description Access the API reference for Express.js 4.x, detailing all modules, methods, and properties for building web applications with this version. lang it redirect_from API 4.x {% capture node-version %} Express 4.0 requires Node.js 0.10 or higher. {% endcapture %} {% include admonitions/note.html content=node-version %} {% include api/en/4x/app.md %}