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

If you want to include the minus sign "-" in the character class, you have to put it into the end of range:

val.replace(/[^a-zA-Z_0-9-]/g, '')