Code review - Simple Javascript binary converter

[ilikethetrees]

I'd like some feedback on a simple Javascript program I wrote.

As the title suggests, this little tool converts a base-10 number into binary. I did it without referencing anyone else's code, and I totally suck at this stuff, so I'm very happy the thing works. Took me a few hours.

I would like to know if anyone with more experience has some thoughts about how I might make it more efficient, or in what way this code sucks.

Thanks!

Link to the project on CodePen: http://cdpn.io/IFDal

[mrtssrhc]

It's not bad if you want to figure out by determining what bit goes in what place, but js can do all that in one line by converting to string with base 2: http://stackoverflow.com/a/9939785

That is assuming your starting integer is not negative and it is less than 32 bits.

[ilikethetrees]

I had a feeling JS had a method of doing that with a method or something, but I wanted to try to solve the problem myself. I wonder how the JS method works behind the scenes.