jQuery - resizing form input based on value's width?

Question

Is it possible to get input\'s value width and resize the input dynamically so the value will fit?

Here\'s an example:

http://jsfiddle.net/bzBdX/2/

Answer 1

http://jsfiddle.net/bzBdX/11/

So i made an example where it tries to calculate the width by inserting letters in a span and calculating there width

(function() {
    var mDiv = $("").text("M").appendTo("body"),
        mSize = mDiv.width();
    mDiv.detach();

    var letterSize = function(s) {
        var sDiv = $("").text("M" + s + "M").appendTo("body"),
            sSize = sDiv.width();

        sDiv.detach();

        return (sSize - (mSize * 2)) * 0.89;
    };

    $("input[data-resise-me]").each(function() {
        var minSize = $(this).width();

        var resizeInput = function() {
            var calcSize = $.map($(this).val(), letterSize);
            var inputSize = 0;
            $.each(calcSize, function(i, v) { inputSize += v; });

            $(this).width( inputSize < minSize ? minSize : inputSize );
        };

        $(this).on({ keydown: resizeInput, keyup: resizeInput });
    });
} ());

Theres probably a much better way of doing this.