try this sample
http://www.espruino.com/EspruinoESP8266#software-serial
@MaBe 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.
try this sample
http://www.espruino.com/EspruinoESP8266#software-serial