History of String.prototype.substr() Revision history for: English (US) Oct 12, 2016, 11:30:02 AM danm Technical review completed. Previous Oct 12, 2016, 11:26:23 AM SphinxKnight Regarding the specs, substr is not deprecated nor there is any plan to do so a priori Previous Oct 12, 2016, 10:19:05 AM danm Previous Oct 12, 2016, 10:00:52 AM danm The first of this article is " The deprecated substr() " but there was no deprecation tag or header... is it officially deprecated? Previous Aug 18, 2016, 3:04:13 AM StanE Fixed incorrect (negative) length value in examples section Previous Aug 17, 2016, 11:53:24 PM rajatjain1998 Previous Aug 16, 2016, 12:00:34 AM hexalys add deprecated mention per https://blog.whatwg.org/javascript Previous Aug 11, 2016, 7:41:15 PM Octopinky Previous Aug 11, 2016, 7:27:19 PM Octopinky Previous Jul 24, 2016, 4:20:38 AM eduardoboucas Add "Return value" section as per Bug 1287421