139614 2014-12-12 19:01:19 -0800 Web Inspector: Console should do a better job of determining real constructor 2026-01-12 09:01:19 -0800 1 1 1 Unclassified WebKit Web Inspector 528+ (Nightly build) All All NEW InRadar P2 Normal --- 1 joepeck webkit-unassigned graouts inspector-bugzilla-changes webkit-bug-importer oldest_to_newest 1055375 0 joepeck 2014-12-12 19:01:19 -0800 * SUMMARY For Objects it is very useful to know the constructor. If the prototype has been modified and loses constructor the Console may show misleading values. We should do a better job here. * TEST <script> function BottomLevel() { this._bottom = Math.random(); } function TopLevel() { BottomLevel.call(this); this._top = Math.random(); } TopLevel.prototype = {} // Comment this out to get desired result TopLevel.prototype.__proto__ = BottomLevel.prototype; var x = new TopLevel; console.log(x); // => BottomLevel, because x.constructor => BottomLevel. </script> * STEPS TO REPRODUCE 1. Inspect test above => Console labels "x" a "BottomLevel" object => Expected to see "TopLevel" object, since that was the constructor * NOTES - Settings constructor on TopLevel fixes the issue - Chrome shows "TopLevel" with/without prototype.constructor being set. 1056413 1 webkit-bug-importer 2014-12-17 11:22:05 -0800 <rdar://problem/19281496> 1056462 2 webkit-bug-importer 2014-12-17 11:25:47 -0800 <rdar://problem/19281616>