https://www.uiltexas.org/resources/js/uni-form.jquery.min.js

1/**
2 * Uni-Form jQuery Plugin without Validation
3 *
4 * @see http://sprawsm.com/uni-form/
5 * @license MIT http://www.opensource.org/licenses/mit-license.php
6 */
7jQuery.fn.uniform=function(settings){settings=jQuery.extend({valid_class:'valid',invalid_class:'invalid',error_class:'error',focused_class:'focused',holder_class:'ctrlHolder',field_selector:'input, textarea, select',default_value_color:"#AFAFAF"},settings);return this.each(function(){var form=jQuery(this),validate=function($input,valid,text){var $p=$input.closest('div.'+settings.holder_class).andSelf().toggleClass(settings.invalid_class,!valid).toggleClass(settings.error_class,!valid).toggleClass(settings.valid_class,valid).find('p.formHint');if(!valid&&!$p.data('info-text')){$p.data('info-text',$p.html());}else if(valid){text=$p.data('info-text');}
8if(text){$p.html(text);}};form.submit(function(){form.find(settings.field_selector).each(function(){if($(this).val()==$(this).data('default-value'))$(this).val("");});})
9form.find(settings.field_selector).each(function(){var $input=$(this),value=$input.val();$input.data('default-color',$input.css('color'));if(value==$input.data('default-value')||!value){$input.not('select').css("color",settings.default_value_color);$input.val($input.data('default-value'));}})
10form.delegate(settings.field_selector,'focus',function(){form.find('.'+settings.focused_class).removeClass(settings.focused_class);var $input=$(this);$input.parents().filter('.'+settings.holder_class+':first').addClass(settings.focused_class);if($input.val()==$input.data('default-value')){$input.val("");}
11$input.not('select').css('color',$input.data('default-color'));});form.delegate(settings.field_selector,'blur',function(){var $input=$(this);form.find('.'+settings.focused_class).removeClass(settings.focused_class);if($input.val()==""||$input.val()==$input.data('default-value')){$input.not('select').css("color",settings.default_value_color);$input.val($input.data('default-value'));}else{$input.css('color',$input.data('default-color'));}});form.delegate(settings.field_selector,'error',function(e,text){validate($(this),false,text);});form.delegate(settings.field_selector,'success',function(e,text){validate($(this),true);});});};