Bug 132730 – Object.defineProperty ERROR

• Status: NEW
• Component: DOM

[Peng Xinchao]

The below JS Source :
var keyEvent = document.createEvent('KeyboardEvent');
Object.defineProperty(keyEvent, 'which', {get: function() { 
    return 6; 
   }});

It will throw errer :
" Attempting to change enumerable attribute of unconfigurable property."

The JS  source  run in Safari , It will throw errer :
" Attempting to change enumerable attribute of unconfigurable property.".
They run in chrome , it is ok .

[Ahmad Saleem]

Just created this JSFiddle:

https://jsfiddle.net/zdjoc0yL/

It does not throw any error in Safari 17. Anything needed here?