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/* * Character Count Plugin - jQuery plugin * Dynamic character count for text areas and input fields * written by Alen Grakalic * http://cssglobe.com/post/7161/jquery-plugin-simplest-twitterlike-dynamic-character-count-for-textareas * * Copyright (c) 2009 Alen Grakalic (http://cssglobe.com) * Dual licensed under the MIT (MIT-LICENSE.txt) * and GPL (GPL-LICENSE.txt) licenses. * * Built for jQuery library * http://jquery.com * */ (function ($) { $.fn.charCount = function (options) { // default configuration properties var defaults = { allowed: 140, warning: 25, css: 'counter', counterElement: 'span', cssWarning: 'warning', cssExceeded: 'exceeded', counterText: '' }; var options = $.extend(defaults, options); function calculate(obj) { var count = $(obj).val().length; var available = options.allowed - count; if (available <= options.warning && available >= 0) { $(obj).next().addClass(options.cssWarning); } else { $(obj).next().removeClass(options.cssWarning); } if (available < 0) { $(obj).next().addClass(options.cssExceeded); } else { $(obj).next().removeClass(options.cssExceeded); } $(obj).next().html(options.counterText + available); }; this.each(function () { $(this).after('<' + options.counterElement + ' class="' + options.css + '">' + options.counterText + '</' + options.counterElement + '>'); calculate(this); $(this).keyup(function () { calculate(this) }); $(this).change(function () { calculate(this) }); }); }; })(jQuery);
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