fastest way to remove hyphens from a string [js]

You need to include the global flag:

var str="185-51-671";
var newStr = str.replace(/-/g, "");

This is not faster, but

str.split('-').join('');

should also work.

I set up a jsperf test if anyone wants to add and compare their methods, but it's unlikely anything will be faster than the replace method.

http://jsperf.com/remove-hyphens-from-string

var str='185-51-671';
str=str.replace(/-/g,'');