Remove illegal characters from a file name but leave spaces

Question

I have the following line of code to remove illegal characters from a file name:

str= str.replace(/([^a-z0-9]+)/gi, '-');

That works fine but it also removes the spaces, how can I only remove the illegal characters but leave the spaces?

Answer 1

Illegal characters are listed here. To replace them use this regex /[/\\?%*:|"<>]/g like this:

var filename = "f?:i/le>  n%a|m\\e.ext";

filename = filename.replace(/[/\\?%*:|"<>]/g, '-');

console.log(filename);