@Gordon There's not one single web page strictly speaking that allows you test the Web Bluetooth API. For now, the best you can have is available at https://googlechrome.github.io/samples/web-bluetooth/
@François started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon There's not one single web page strictly speaking that allows you test the Web Bluetooth API. For now, the best you can have is available at https://googlechrome.github.io/samples/web-bluetooth/