val.replace(/[^a-zA-Z_-0-9]/g, '') produce SyntaxError: invalid range in character class

Question

I need to replace all chars which are not match with range a-zA-Z_-0-9. So I do val.replace(/[^a-zA-Z_-0-9]/g, \'\') but get error. How can I bit t

Answer 1

You need to escape the "-"

val.replace(/[^a-zA-Z_\-0-9]/g, '')