function addPlayerScore(){
    var name = $(this).attr("data-player-name");

    var scoreSpan = $("span[data-player-name='"+name+"']");
    var oldScore_raw = scoreSpan.html();
    var oldScore_int = parseInt(oldScore_raw);
    scoreSpan.html(oldScore_int+1);
}



$(document).ready(function(){

    $("#add").click(function(){
        var text = $("#input1").val();
        if(text.length) {
            var elem = $("<li/>", {html: text});
            var span = $("<span/>", {html: 0});
            span.attr("data-player-name", text);
            var btn = $("<button/>", {html: "+"});
            btn.attr("data-player-name", text);
            btn.click(addPlayerScore);

            span.appendTo(elem);
            btn.appendTo(elem);
            elem.appendTo("#namelist");
        }
    });

    $("#start").click(function(){
        $("#div1").hide();
        $("header").hide();
    });

});