JS library detector

Ever wondered which JavaScript library (if any) is hidden beneath the bells & whistles of each site you gazed at? Since I am a curious person, I find myself wondering every time, so after a bit of research, I wrapped up a little bookmarklet that instantly told me the answer every time.


Check whether a CSS property is supported

Sometimes when using JavaScript, you need to determine whether a certain CSS property is supported by the current browser or not. For instance when setting opacity for an element, you need to find out whether the property that the browser supports is opacity, -moz-opacity (MozOpacity), -khtml-opacity (KhtmlOpacity) or the IE proprietary filter.

Instead of performing a forwards incompatible browser detect, you can easily check which property is supported with a simple conditional.