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JavaScript JavaScript Basics (Retired) Working With Numbers Review Working with Numbers

Dave Patton
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Dave Patton
Front End Web Development Techdegree Student 5,209 Points
Posted by Dave Patton
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Dave Patton
Front End Web Development Techdegree Student 5,209 Points

Won't parseInt() do the same thing as Math.floor(), but faster since you don't have to call up the Math class?

I'm just curious if you this is a more common way to get an integer from a float.

3 Answers

Ayoub AIT IKEN
Ayoub AIT IKEN
12,314 Points
Ayoub AIT IKEN
Ayoub AIT IKEN
12,314 Points

hey ! yeah , well, its not that big difference between the two, but you can use them both ! :)

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

Interesting question. I created a simple JavaScript performance test for these two scenarios. As it turns out, Math.floor() is much faster.

http://jsperf.com/test-parseint-and-math-floor

Not sure why, and in actual performance, if you only do this once in a script, it will really make no actual performance difference.

Ayoub AIT IKEN
Ayoub AIT IKEN
12,314 Points
Ayoub AIT IKEN
Ayoub AIT IKEN
12,314 Points

strange but true though, thanks Dave McFarland for your concerne, i personaly really appreciate !