javascript - Elo 评级系统的这段代码有什么问题

Question

我正在尝试制作一个程序来自动更改此人的 elo 评级。我遇到了一个我似乎无法解决的问题。代码如下:

        Liam=1000; 
        Stefan=1000; 
        Dylan=1000; 
        Dennis=1000; 
        Daniel=1000; 
        K=32; 
        //eloX is the player who won 
        var ratingChange = function(PlayerX,PlayerY){ 
        //Expected Winning percentage of player X 
        var EWP_X = 1/(1+10^((PlayerY-PLayerX)/400)); 
        //WP=Winning Percentage 
        WP=1; 
       //Player X rating change 
       PlayerX = PlayerX+K*(WP-EWP_X); 
       console.log(PLayerX)
       }; 
       ratingChange(Liam,Dylan)

每当我测试这个 Javascript 时，我都会收到错误“PlayerX 未定义”。我对 Javascript 很生疏，所以我确信这是我忽略的一个明显问题。感谢您的帮助!

Answer 1

Javascript 区分大小写。 L 应该是 l:

var EWP_X = 1/(1+10^((PlayerY-PlayerX)/400)); 

console.log(PlayerX)

请引用 fiddle :http://jsfiddle.net/zeskysee/vd06gox9/