jQuery text box

$(".textInput").keyup(function(){
        var dargBox = $(this);
        var textBox = $('cardElementsWrapperBorder');
        var dragBoxRightSide = $dragBox.width() + $dragBox.offset().left;
        var textBoxRightSide = $textBox.width() + $textBox.offset().left;

        if ( dragBoxRightSide >= textBoxRightSide ) {
        alert('WTF?');
        }
    });