Of all the hats JavaScript can wear, its form-processing features are among the most sought and used. Learn how to use JavaScript for form processing, validation, and more.

Always test your pages using Google’s own tools and third-party resources to view the rendered HTML to make sure all your content is showing up.

Save the index.html file and refresh the web browser. Uploads to Node.js will go through Ajax, and thus create a full JavaScript file uploader with JavaScript running both on the client and the server ...