In my series on ESP32 and Wifi I covered how to show live data in a web browser. As per request I provide a specific example in this video and show real time temperature readings from a DHT22 sensor in a webbrowser using an ESP32.
#Youtube: https://youtu.be/DEFPSfLRObk
The underlaying code for chart generation is described here: https://youtu.be/VaNVrE7-AO8
If you want to follow the complete series on Wifi communication on an ESP32 I recommend starting here: https://youtu.be/0AlATlN95Y0