History of String.prototype.indexOf() Revision history for: English (US) Oct 4, 2016, 2:21:30 AM fscholz clear review; thanks! Previous Sep 26, 2016, 5:49:13 PM kevinAlbs Previous Sep 25, 2016, 3:22:45 PM wido Clarify that searching for an empty string will return 0. Previous Jul 23, 2016, 10:29:11 AM eduardoboucas Add "Return value" section as per Bug 1287421 Previous May 11, 2016, 3:01:35 AM BhavikSheth In the ew Previous Jan 4, 2016, 8:01:05 AM fscholz add ES draft Previous Dec 10, 2015, 4:19:57 PM Botulism cleaned up fromIndex text Previous Jul 30, 2015, 12:32:26 PM Sheppy Previous Jul 13, 2015, 8:43:51 AM fscholz fix compat parsing error; cleanup Previous Jan 19, 2015, 7:44:02 PM stevemao Use !== for better practice