KeyStroke KeyStroke - 10 months ago 65
Javascript Question

jQuery validation plugin: accept only alphabetical characters?

I'd like to use jQuery's validation plugin to validate a field that only accepts alphabetical characters, but there doesn't seem to be a defined rule for it. I've searched google but I've found nothing useful.

Any ideas?

Appreciate your help.


If you include the additional methods file, here's the current file for 1.7:

You can use the lettersonly rule :) The additional methods are part of the zip you download, you can always find the latest here.

Here's an example:

  rules: {
    myField: { lettersonly: true }

It's worth noting, each additional method is independent, you can include that specific one, just place this before your .validate() call:

jQuery.validator.addMethod("lettersonly", function(value, element) {
  return this.optional(element) || /^[a-z]+$/i.test(value);
}, "Letters only please");