limitcharacters.js

// Limit character lengths on textareas using jQuery and metadata
// ////////////////////////////
 
   // Store the metadata in data() for quicker access on the event.
    var textboxesToLimit = $('textarea.character_limit');
    textboxesToLimit.each(function() {
        $(this).data('maxlength', $(this).metadata().maxlength);
    }).keyup(function() {
        var len = this.value.length;
        var maxlength = $(this).data('maxlength');
        if (len >= 150) {
            this.value = this.value.substring(0, maxlength);
        }
        $(this).nextAll('.charsLeft').text(maxlength - len);
    });