Regular expression in javascript to remove anything that is not: a-z 0-9 and hyphen

Question

Thanks in advance.

I would like a regular expression that removes anything that is NOT alpha numeric and a hyphen. So allowed are A-Z 0-9 and -.

Also, how could I apply that to a string in Javascript?

Thanks again.

Answer 1

var str = 'a23a-asd!@#$';
str.replace(/[^-a-z0-9]/ig,'');