The jQuery validator is really cool, and you can create your own validators. Here’s one that counts the words in a text area, and validates :

$('.word_count').each(function() {
 var input = '#' +;
 var count = input + '_count';
 word_count(input, count);
 $(this).keyup(function() { word_count(input, count) });
function word_count(field, count) {
var number = 0;
 var matches = $(field).val().match(/\b/g);
 if(matches) {
 number = matches.length/2;
 $(count).text( number);
jQuery.validator.addMethod("twentywords", function(value, element, param) { 
 if($(element+'_count').html() > 19){return true;}
 else{return false;}
 }, jQuery.validator.messages.url);

And in the rules section:

rules: {
f_review: {
 twentywords: true
 messages: {
f_review: "Please leave a review of the agent at least 20 words"

I’ve hard coded the name input into the validator, as I’m in work and it needs done quickly, but I’m sure this could be tweaked. Finally there is a hidden element that the word cound gets stored in and the input textarea has a class of word_count:

<div id="f_review_count"style="display:none"></div>
 <textarea name="f_review" id="f_review" rows="8" cols="40" class="text-long word_count"></textarea>

The word count stuff can be used on its own without the validator too. 🙂