Removing numbers and characters from a string

Question

If a user clicks on a tag, right now it recognizes the full text (numbers and characters).

returns Popular Tag %82

I've tried:

$tag.click(function(){
  var $this = $(this);
  var text = $this.text();
  var num = text.parseInt();
  num.remove();
  alert(text)
});

Doesn't do the trick for numbers. So how would I get just the letters? Ie: ignoring BOTH numbers and special characters(%)

Fiddle here! Thanks for you help!

Answer 1

The simplest way is to use a regex:

var s = "ABCblahFoo$%^3l";
var letters = s.replace(/[^A-Za-z]+/g, '');

• the [] represents a character (or a number of different possible characters)
• the ^ means all characters EXCEPT the ones defined in the brackets
• AZ equals capital letters
• az equals lowercase letters

So... Replace every character that is NOT a letter with the empty string.

jsFiddle Demo