Character countdown like on twitter

Question

How can I make a \"remaining characters\" countdown like the one on Twitter with jQuery? And also limit the input to a textarea.

Answer 1

use jquery

save this as jquery.textlimiter.js

(function($) {
    $.fn.extend( {
        limiter: function(limit, elem) {
            $(this).on("keyup focus", function() {
                setCount(this, elem);
            });
            function setCount(src, elem) {
                var chars = src.value.length;
                if (chars > limit) {
                    src.value = src.value.substr(0, limit);
                    chars = limit;
                }
                elem.html( limit - chars );
            }
            setCount($(this)[0], elem);
        }
    });
})(jQuery);

usage

    
100