javascript Truncate string after comma

Question

I'm looking for a way to remove the comma and all that comes after it in a string, for example:

important, not so important

I'd like to remove ",not so important"

Any ideas? Thanks in advance!

Answer 1

You can do it with substring and indexOf:

str = str.substring(0, str.indexOf(','));

but you'd have to be sure that a comma is in there (test it before).

Another possibility is to use split():

str = str.split(',')[0];

this works even without testing beforehand but might perform unnecessary string operations (which is probably negligible on small strings).

Answer 2

http://www.jsfiddle.net/a5SWU/

var a = "important, not so important";

a = a.split(",")[0];