Javascript 为什么这只会在第一次调用时增加分数？

复制步骤：

function StatHandler ( totalScoreSelector, fruitEatenSelector )
{
    this.scoreElem = $(totalScoreSelector);
    this.fruitEeatenElem = $(fruitEatenSelector);

    this.incrementScore = function ( incAmount )
    {
        var that = this;
        $.ajax({
            type: "POST",
            url: "Play/IncrementScore?amount=" + incAmount,
            success: function (newScore)
            {
                that.scoreElem.text(newScore);
                console.log(newScore); // TEST
            },
            error: function ( ) 
            {
                alert("error occured!");
            }
        });
    }
}

public class PlayController : Controller
{

    private ushort score;

    // GET: Play
    public ActionResult Index ( )
    {
        ResetScore();
        return View ( );
    }

    [HttpPost]
    public ushort IncrementScore ( ushort amount )
    {
        score += amount;
        return score;
    }

    [HttpPost]
    public void ResetScore ( )
    {
        score = 0;
    }
}

打开

单击向左、向上或向下箭头键使蛇（绿色方块）移动

引导蛇越过食物（红色圆圈）

总分从0到10

再把蛇放在食物上

总分还是10分

预期行为：

function StatHandler ( totalScoreSelector, fruitEatenSelector )
{
    this.scoreElem = $(totalScoreSelector);
    this.fruitEeatenElem = $(fruitEatenSelector);

    this.incrementScore = function ( incAmount )
    {
        var that = this;
        $.ajax({
            type: "POST",
            url: "Play/IncrementScore?amount=" + incAmount,
            success: function (newScore)
            {
                that.scoreElem.text(newScore);
                console.log(newScore); // TEST
            },
            error: function ( ) 
            {
                alert("error occured!");
            }
        });
    }
}

public class PlayController : Controller
{

    private ushort score;

    // GET: Play
    public ActionResult Index ( )
    {
        ResetScore();
        return View ( );
    }

    [HttpPost]
    public ushort IncrementScore ( ushort amount )
    {
        score += amount;
        return score;
    }

    [HttpPost]
    public void ResetScore ( )
    {
        score = 0;
    }
}

每次蛇头撞击食物时，分数应增加10

相关Javascript:

function StatHandler ( totalScoreSelector, fruitEatenSelector )
{
    this.scoreElem = $(totalScoreSelector);
    this.fruitEeatenElem = $(fruitEatenSelector);

    this.incrementScore = function ( incAmount )
    {
        var that = this;
        $.ajax({
            type: "POST",
            url: "Play/IncrementScore?amount=" + incAmount,
            success: function (newScore)
            {
                that.scoreElem.text(newScore);
                console.log(newScore); // TEST
            },
            error: function ( ) 
            {
                alert("error occured!");
            }
        });
    }
}

public class PlayController : Controller
{

    private ushort score;

    // GET: Play
    public ActionResult Index ( )
    {
        ResetScore();
        return View ( );
    }

    [HttpPost]
    public ushort IncrementScore ( ushort amount )
    {
        score += amount;
        return score;
    }

    [HttpPost]
    public void ResetScore ( )
    {
        score = 0;
    }
}

---

---

相关C:

function StatHandler ( totalScoreSelector, fruitEatenSelector )
{
    this.scoreElem = $(totalScoreSelector);
    this.fruitEeatenElem = $(fruitEatenSelector);

    this.incrementScore = function ( incAmount )
    {
        var that = this;
        $.ajax({
            type: "POST",
            url: "Play/IncrementScore?amount=" + incAmount,
            success: function (newScore)
            {
                that.scoreElem.text(newScore);
                console.log(newScore); // TEST
            },
            error: function ( ) 
            {
                alert("error occured!");
            }
        });
    }
}

public class PlayController : Controller
{

    private ushort score;

    // GET: Play
    public ActionResult Index ( )
    {
        ResetScore();
        return View ( );
    }

    [HttpPost]
    public ushort IncrementScore ( ushort amount )
    {
        score += amount;
        return score;
    }

    [HttpPost]
    public void ResetScore ( )
    {
        score = 0;
    }
}

---

有什么想法吗？

每次调用
IncrementScore（）
方法（值为零）时，都会在控制器中初始化
分数<代码>返回分数
将只返回
amount
@StephenMuecke的值，那么我应该将分数放入会话存储中吗？这是一个选项。你需要在某个地方保存它：）当然，如果你不想永久保存该值（例如，以后能够恢复游戏），你可以在客户端上进行计算。john skeet什么时候玩的，得到这么多分数。。开玩笑……）