Bug 71113 – [V8] Event.type incorrectly reports that it is writable

• Status: RESOLVED
• Resolution: DUPLICATE
• Component: WebCore JavaScript

[Jake Verbaten]

var e = document.createEvent("UIEvent");
var pd = Object.getOwnPropertyDescriptor(e, "type");
console.log(pd.writable); // type is writable
e.type = "foobar";
console.log(e.type === ""); // Webkit Y U DO THIS.

test : http://jsfiddle.net/WxA3a/1/ in chrome 14.

I presume this is an issue with `e.type` living in C++ land and `e.type = "foobar"` living in ES land.

As a sidenote

delete e.type; 
e.type = "click";

breaks e.initEvent()

[Alexey Proskuryakov]

I cannot reproduce this with Safari 5.1 or with a current local build. The value of pd.writable is false, like it should be per <http://www.w3.org/TR/DOM-Level-3-Events/#webidl-events-Event>:

        readonly attribute DOMString        type;

[Erik Arvidsson]

Yeah, this is wrong in Chromium/V8.

But, type is specced as a getter on Event.prototype

[Jake Verbaten]

Given that the value is different in Safari 5.1 and Chrome (14/15).

Is this still an issue with Webkit or an issue with v8/chromium?

Should I go complain to v8 or chromium instead?

[Dominic Cooney]

*** This bug has been marked as a duplicate of bug 48337 ***