Question

I have a form that lets the user type what they want their filename with extension to be when downloading a file, but I need to validate on the client side (doesn’t contain [^/?*:;{}\\]+\\.[^/?*:;{}\\]+, stuff like that). The filename does not need to contain an extension, but can if they wish. I found this : Validate a file name on Windows
But I am not fluent enough in jQuery to make it work.

Answer 1

As my comment stated its not a jQuery issue its a javascript thing you’re after.

You can go two ways, the easiest being

var myString = "hello world";
var regexp = /w+/
var match = regexp.exec(myString);
console.log(myString); //will print the world "hello"

The other would be using the Regexp Object.

Simply instead of using “literal regexp”, if you would agree to call it that, use the object

var re = new RegExp("\\w+");
var match = re.exec(myString);
console.log(myString); //will print the world "hello"

This handy website is primary for Ruby regexp but its a great tool of creating regexps

Rubular