Hi to everyone,
I am newbie on the ESP32, and I would like to create a simple HTML page that I can use for different projects.
The page shall include:

• user authentication;
• real-time plots for telemetries;
• toggle switches (to send telecommand);
• some buttons (to send telecommand);
• some textbox with related submit buttons (to pass same input values to the server).

With this structure, I could easily customize the HTML page for different applications.
Currently, following your tutorials, I succesfully integrated together the highcharts (different telemetries on the same plot), the toggle switches, but I am facing a lot of problems with buttons and textbox; the tutorial that I have followed are these:

• ESP32 Async Web Server – Control Outputs with Arduino IDE (ESPAsyncWebServer library)
• ESP32/ESP8266 Plot Sensor Readings in Real Time Charts – Web Server
• Input Data on HTML Form ESP32/ESP8266 Web Server using Arduino IDE

I would like to avoid the page refreshing when I push a button, in order to not reset the real-time plots.

Here, the Arduino code:
https://pastebin.com/embed_js/kMbtXuEs

Here, the HTML code:
https://pastebin.com/embed_js/peg8Kd5w

Thanks in advance for any suggestion!