When did Internet Explorer add support for the for..in loop in JavaScript?
internet-explorer, javascript
Solution
As far as I can remember, every browser ever supporting JS has had to have support `for ... in` because until recently it was the only way to enumerate the keys of an object.
Problem
If I remember correctly, older versions of Internet Explorer didn't support the `for..in` statement. I've no idea which versions though, and it's not the easiest thing to Google. According to Microsoft, it's supported in Quirks Mode, and in standards mode from IE 6 onwards: - http://msdn.microsoft.com/en-us/library/ie/55wb2d34(v=vs.94).aspx ("Requirements" section near the bottom) Which version of Internet Explorer added support for this?