Sending info and variables between Client-Side and Server-Side

so I have an express.js server, I don’t quite understand how I can send and receive I have (for example) an input for someone to write his email , I want the email to be sent to the server, validated, …

How do I send message from HTML to Python (Flask) using JavaScript?

I need to send string from HTML file to Python(Flask) using JavaScript. This is my HTML code inside “templates” folder: <button type="button" class="btn btn-primary btn-lg&…

POST http://localhost:3000/data 400 (Bad Request) when trying to send data from client to server

Hey guys so i’ve got some problem with sending data from client-side to server-side. Basically i have a function that on click is setting variable called categorySearch to a string e.g categorySearch =…

How to implement Server-Sent Events in Flask framework?

I’m trying to get a progress bar to work in Flask. I use a Server Sent Events for that. When I run it in local development server, then everything works well and I can see in the browser real time added numbers in /progress window and progress bar works no problems. But if I run it in Linux server (Linode), then browser windows hangs for 10 sec and after that progress bar jumps to 100. I am beginner and do not understand why it works in local machine and why not in the remote server. Please somebody explain. And also

Easiest way to get list of files in the server directory

I need to get array of all images (or simply of all files) in directory (e.g. www.example.com/images/). I prefer to use JavaScript but it’s hard to make. So should I use PHP, meybe? Could you please …