Use colGroup() to create column groups in a table.

The web’s most popular front-end template which helps you build fast, robust, and adaptable web apps or sites.

The JavaScript console is an essential tool for web development. Learn new and fun ways to use the console to display data and debug your code.

W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.

Web pages and apps used to demo various DevTools, PWA, WebView, Extensions, and Web Platform features of Microsoft Edge