foo in bar - 'in' operator javascript?

Question

I recently read a tutorial on CSS browser feature detection... The end product was something like this...

var prefix = [\'Moz\', \'webkit\', \'O\', \'ms\', \'Kht         


        

Answer 1

 document.createElement('div').style

will return a object which have CSS properties. you can use key in to check if particular property exist in a object.