Question

I have a text box on a HTML page, the idea is that the user can enter any text into the box and then Jquery will remove every other than letters of the alphabet.

This is what I have come up with, it works for small text samples, 1-2 lines, however anything over this it only works on a small section of the input text, is there a better way to do this?

$("#read").change(function () {
    read = $("#read").val().toLowerCase().replace(/[^a-z]+/, '');
    $("#read").val(read);
});

Answer 1

add /gi to end of your regular expression

/[^a-z]+/gi

then it will replace all occurrences through whole string.

g (for global) and i (for ignore case)

with the comments of @Lunar this is how your code should look like

$("#read").change(function () {
     $(this).val($(this).val().replace(/[^a-z]/gi, ''));
   });