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JavaScript JavaScript Foundations Numbers Parsing Numbers From Strings

Anthony Giuliano
Anthony Giuliano
9,569 Points
Posted by Anthony Giuliano
Anthony Giuliano
9,569 Points

parseInt

Was there a change in Javascript since recording this video? When I leave out the second argument in parseInt, it seems to be defaulting to 10, which is different from what we're seeing in the video.

2 Answers

Dave McFarland
STAFF
Dave McFarland
Treehouse Teacher
Dave McFarland
Dave McFarland
Treehouse Teacher

Yes, there's been a change. According to the the ECMAScript 5 Standard, parseInt defaults to decimal, so you don't need to add a second value of 10. This is supported by all current browsers.

Anthony Giuliano
Anthony Giuliano
9,569 Points
Anthony Giuliano
Anthony Giuliano
9,569 Points

Thanks. I was also just about to reply again because I hadn't finished watching the video where he goes on to explain that browsers can interpret it differently from each other. Good to know that the change has been made across the board though.