JavaScript Robot Simulator (Updated)

*Updated in July 2015* This is a JavaScript robot simulator using HTML5 Canvas that moves around a square table top. The robot is free to roam the table, but must be prevented from falling to destruction. Any movement that would result in the robot falling from the table must be prevented.

JavaScript prevent caching and preventDefault() not working issue in IE

Weeks ago, I incorporated Bootstrap popover function into one of my Facebook apps. It worked fine in Chrome (blame myself I didn’t do cross-browser testing in IE properly). This morning when it was supposed to go live we found that it didn’t work in IE! While debugging, I noticed the js file was not the right version that was supposed to be using. The solution is simple and you must have already known this but it’s worth noting it down: appending a timestamp to the JavaScript file should solve the problem (refer to David Walsh’s solution).

RGBa in IE

This week, when I was doing cross-browser testing, a new CSS problem came across to me - rgba supporting issue in IE.