WebOS gui is written in javascript with hooks into the hardware. In fact its so easy to modify you can download the ipks from preware and see that they are shellscripts of patchdiffs to different parts of the system. Want to turn on the flashlight from the menubar? There is a JS function call in the system library for that.
My first exposure to it was disabling the CDMA radio, from javascript, and enabling wifi. I was using a Sprint Pre for development in a country where only GSM exists. To get past the initial setup screen I configured the system to use wifi instead of GPRS.
The great thing about WebOS was it was open in the literal sense (unfortunately, not the license) you could modify every aspect of the system using javascript and CSS. There is nothing else like it in the world. Not Android, not WP7 and definitely not iOS
My first exposure to it was disabling the CDMA radio, from javascript, and enabling wifi. I was using a Sprint Pre for development in a country where only GSM exists. To get past the initial setup screen I configured the system to use wifi instead of GPRS.
The great thing about WebOS was it was open in the literal sense (unfortunately, not the license) you could modify every aspect of the system using javascript and CSS. There is nothing else like it in the world. Not Android, not WP7 and definitely not iOS