当我使用返回的变量时，Ajax调用不起作用

Question

我有以下javascript代码。请注意两行都有大写注释。

出于某种原因，在第一次ajax调用中，如果我提到所有返回的变量'racewon'，它会阻止代码执行第一个选项（即当'selected'等于'current'时。当我删除这些引用时'racewon'代码在这里有效。有人可以帮忙吗？

function showe() {

    //first make everything invisible again
    document.getElementById('current').style.display = 'none';
    document.getElementById('details').style.display = 'none';
    document.getElementById('new').style.display = 'none';
    document.getElementById('delete').style.display = 'none';
    // first we take the ID of the person and pass it to our form
    var hope = $("#person").val();

    var freedome = $.ajax({
        method: "GET",
        url: "LockInPerson.php",
        data: {
            thing: hope
        }
    });
    freedome.done(function (msg) {
        var racewon = msg["winner"];
        var NoOtherAdmin = msg["NoOtherAdmin"];
    });


    var selected = $("#selector").val();
    alert(racewon); //HOW COME WHEN I MENTION THIS RETURNED VARIABLE IT FAILS

    if (selected == "current" && racewon != null) { //ALSO IT FAILS WHEN I MENTION THIS VARIABLE HERE
        document.getElementById('current').style.display = 'block';
        return;
    }

    if (selected == "details") {
        document.getElementById('details').style.display = 'block';
        var freedom = $.ajax({
            url: "RESPONDERdetails.php",
            type: "GET",
            dataType: "json",
            data: {
                thing: hope
            }
        });
        freedom.done(function (msg) {
            name = msg["username"];
            password = msg["password"];
            gender = msg["gender"];
            weight = msg["weight"];
            $("#DetName").attr("value", name);
            $("#DetPassword").attr("value", password);
            $("#DetGender").attr("value", gender);
            $("#DetWeight").val(weight);
        });
        return;
    }

    if (selected == "new") {
        document.getElementById('new').style.display = 'block';
        return;
    }

    if (selected == "delete" && NoOtherAdmin == null) {
        // this means there is another admin
        document.getElementById('delete').style.display = 'block';
        //$( "#deleter" ).submit();
        return;
    }

    if (selected == "delete" && NoOtherAdmin != null) {
        document.getElementById('makeadmin').style.display = 'block';
        return;
    }
}