jquery.validate plugin - how to trim values before form validation

Question

I\'m using the excellent jquery.validation plugin by Jörn Zaefferer and I was wondering whether there\'s a easy way to automatically trim form elements before they are valid

Answer 1

I like the approach by xuser (https://stackoverflow.com/a/10406573/80002), however, I do not like messing with the plugin source code.

So, I suggest doing this instead:

 function injectTrim(handler) {
  return function (element, event) {
    if (element.tagName === "TEXTAREA" || (element.tagName === "INPUT" 
                                       && element.type !== "password")) {
      element.value = $.trim(element.value);
    }
    return handler.call(this, element, event);
  };
 }


 $("form").validate({
    onfocusout: injectTrim($.validator.defaults.onfocusout)
 });