Store variables in flash

A lot has happened in the 6 years since this post!

This should work on any device:

var value = require("Storage").readJSON("myinfo",1);
if (value===undefined) value=21;

buttonPlus.on('click', function() {
  maxTemp++;
   require("Storage").writeJSON("myinfo",maxTemp);
});
buttonMinus.on('click', function() {
  maxTemp--;
   require("Storage").writeJSON("myinfo",maxTemp);
});