RESOLVED WORKSFORME 54289
Object.defineProperty does not override existing properties 
https://bugs.webkit.org/show_bug.cgi?id=54289
Summary Object.defineProperty does not override existing properties
Jürg Lehni
Reported 2011-02-11 09:27:40 PST
Even if configurable: true was provided at definition time: var obj = {}; Object.defineProperty(obj, 'test', { value: 10, configurable: true }); alert(obj.test); // 10 Object.defineProperty(obj, 'test', { value: 20, configurable: true }); alert(obj.test); // Should be 20, is still 10 The workaround is to call delete before the 2nd definition: delete obj.test; But it seems this contradicts the specifications. Or am I misinterpreting them?
Attachments
Code to replicate behavior. (377 bytes, text/html)
2011-02-11 09:28 PST, Jürg Lehni 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Jürg Lehni
Comment 1 2011-02-11 09:28:29 PST
Created attachment 82140 [details] Code to replicate behavior.
Jürg Lehni
Comment 2 2011-02-14 02:22:15 PST
Here the link to the same bug over at the Chromium site: http://code.google.com/p/chromium/issues/detail?id=72736
Gavin Barraclough
Comment 3 2012-03-12 16:00:28 PDT
This works in ToT, a lot of defineOwnProperty bugs were fixed lately so it'll be hard to track down exactly which revision! Please reopen if you are still seeing any issues. cheers, G.
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