JavaScript事件处理崩溃

我目前在学习JS，所以不是使用键盘库我认为最好是自己创建一个，这样我才能更好地理解它是如何工作的。我正在创建一个游戏，它并不是一个真正的选择，只是在键盘按下更新游戏，所以我创建了一个循环来运行我将用来更新玩家位置的库。问题在于它一直在崩溃，我认为这对创建和关闭事件非常重要。JavaScript事件处理崩溃

相关的代码运行，这将返回一个关键的库：

function Keyboard(){ 
    ArcKeyboard.ActiveKeys(); 
}; 
setInterval(function(){Keyboard()},200);

图书馆：

var ArcKeyboard 

(function(ArcKeyboard){ 
    var Key = { 
     1: ["No Key Assigned",0], 
     2: ["No Key Assigned",0], 
     3: ["No Key Assigned",0], 
     4: ["No Key Assigned",0], 
     5: ["No Key Assigned",0], 
     6: ["No Key Assigned",0], 
     7: ["No Key Assigned",0], 
     8: ["backspace",0], 
     9: ["tab",0], 
     10: ["No Key Assigned",0], 
     11: ["No Key Assigned",0], 
     12: ["No Key Assigned",0], 
     13: ["enter",0], 
     14: ["No Key Assigned",0], 
     15: ["No Key Assigned",0], 
     16: ["shift",0], 
     17: ["ctrl",0], 
     18: ["alt",0], 
     19: ["pause",0], 
     20: ["capslock",0], 
     21: ["No Key Assigned",0], 
     22: ["No Key Assigned",0], 
     23: ["No Key Assigned",0], 
     24: ["No Key Assigned",0], 
     25: ["No Key Assigned",0], 
     26: ["No Key Assigned",0], 
     27: ["esc",0], 
     28: ["No Key Assigned",0], 
     29: ["No Key Assigned",0], 
     30: ["No Key Assigned",0], 
     31: ["No Key Assigned",0], 
     32: ["space",0], 
     33: ["pageup",0], 
     34: ["pagedown",0], 
     35: ["end",0], 
     36: ["home",0], 
     37: ["left",0], 
     38: ["up",0], 
     39: ["right",0], 
     40: ["down",0], 
     41: ["No Key Assigned",0], 
     42: ["No Key Assigned",0], 
     43: ["No Key Assigned",0], 
     44: ["No Key Assigned",0], 
     45: ["insert",0], 
     46: ["delete",0], 
     47: ["No Key Assigned",0], 
     48: ["0",0], 
     49: ["1",0], 
     50: ["2",0], 
     51: ["3",0], 
     52: ["4",0], 
     53: ["5",0], 
     54: ["6",0], 
     55: ["7",0], 
     56: ["8",0], 
     57: ["9",0], 
     58: ["No Key Assigned",0], 
     59: ["No Key Assigned",0], 
     60: ["No Key Assigned",0], 
     61: ["No Key Assigned",0], 
     62: ["No Key Assigned",0], 
     63: ["No Key Assigned",0], 
     64: ["No Key Assigned",0], 
     65: ["a",0], 
     66: ["b",0], 
     67: ["c",0], 
     68: ["d",0], 
     69: ["e",0], 
     70: ["f",0], 
     71: ["g",0], 
     72: ["h",0], 
     73: ["i",0], 
     74: ["j",0], 
     75: ["k",0], 
     76: ["l",0], 
     77: ["m",0], 
     78: ["n",0], 
     79: ["o",0], 
     80: ["p",0], 
     81: ["q",0], 
     82: ["r",0], 
     83: ["s",0], 
     84: ["t",0], 
     85: ["u",0], 
     86: ["v",0], 
     87: ["w",0], 
     88: ["x",0], 
     89: ["y",0], 
     90: ["z",0], 
     91: ["windowskey",0], 
     92: ["No Key Assigned",0], 
     93: ["menukey",0], 
     94: ["No Key Assigned",0], 
     95: ["No Key Assigned",0], 
     96: ["keypad0",0], 
     97: ["keypad1",0], 
     98: ["keypad2",0], 
     99: ["keypad3",0], 
     100: ["keypad4",0], 
     101: ["keypad5",0], 
     102: ["keypad6",0], 
     103: ["keypad7",0], 
     104: ["keypad8",0], 
     105: ["keypad9",0], 
     106: ["keypad*",0], 
     107: ["keypad+",0], 
     108: ["No Key Assigned",0], 
     109: ["keypad-",0], 
     110: ["keypad.",0], 
     111: ["keypad/",0], 
     112: ["f1",0], 
     113: ["f2",0], 
     114: ["f3",0], 
     115: ["f4",0], 
     116: ["f5",0], 
     117: ["f6",0], 
     118: ["f7",0], 
     119: ["f8",0], 
     120: ["f9",0], 
     121: ["f10",0], 
     122: ["f11",0], 
     123: ["f12",0], 
     124: ["No Key Assigned",0], 
     125: ["No Key Assigned",0], 
     126: ["No Key Assigned",0], 
     127: ["No Key Assigned",0], 
     128: ["No Key Assigned",0], 
     129: ["No Key Assigned",0], 
     130: ["No Key Assigned",0], 
     131: ["No Key Assigned",0], 
     132: ["No Key Assigned",0], 
     133: ["No Key Assigned",0], 
     134: ["No Key Assigned",0], 
     135: ["No Key Assigned",0], 
     136: ["No Key Assigned",0], 
     137: ["No Key Assigned",0], 
     138: ["No Key Assigned",0], 
     139: ["No Key Assigned",0], 
     140: ["No Key Assigned",0], 
     141: ["No Key Assigned",0], 
     142: ["No Key Assigned",0], 
     143: ["No Key Assigned",0], 
     144: ["numlock",0], 
     145: ["scrolllock",0], 
     146: ["No Key Assigned",0], 
     147: ["No Key Assigned",0], 
     148: ["No Key Assigned",0], 
     149: ["No Key Assigned",0], 
     150: ["No Key Assigned",0], 
     151: ["No Key Assigned",0], 
     152: ["No Key Assigned",0], 
     153: ["No Key Assigned",0], 
     154: ["No Key Assigned",0], 
     155: ["No Key Assigned",0], 
     156: ["No Key Assigned",0], 
     157: ["No Key Assigned",0], 
     158: ["No Key Assigned",0], 
     159: ["No Key Assigned",0], 
     160: ["No Key Assigned",0], 
     161: ["No Key Assigned",0], 
     162: ["No Key Assigned",0], 
     163: ["No Key Assigned",0], 
     164: ["No Key Assigned",0], 
     165: ["No Key Assigned",0], 
     166: ["No Key Assigned",0], 
     167: ["No Key Assigned",0], 
     168: ["No Key Assigned",0], 
     169: ["No Key Assigned",0], 
     170: ["No Key Assigned",0], 
     171: ["No Key Assigned",0], 
     172: ["No Key Assigned",0], 
     173: ["No Key Assigned",0], 
     174: ["No Key Assigned",0], 
     175: ["No Key Assigned",0], 
     176: ["No Key Assigned",0], 
     177: ["No Key Assigned",0], 
     178: ["No Key Assigned",0], 
     179: ["No Key Assigned",0], 
     180: ["No Key Assigned",0], 
     181: ["No Key Assigned",0], 
     182: ["No Key Assigned",0], 
     183: ["No Key Assigned",0], 
     184: ["No Key Assigned",0], 
     185: ["No Key Assigned",0], 
     186: [";",0], 
     187: ["=",0], 
     188: [",",0], 
     189: ["-",0], 
     190: [".",0], 
     191: ["/",0], 
     192: ["'",0], 
     193: ["No Key Assigned",0], 
     194: ["No Key Assigned",0], 
     195: ["No Key Assigned",0], 
     196: ["No Key Assigned",0], 
     197: ["No Key Assigned",0], 
     198: ["No Key Assigned",0], 
     199: ["No Key Assigned",0], 
     200: ["No Key Assigned",0], 
     201: ["No Key Assigned",0], 
     202: ["No Key Assigned",0], 
     203: ["No Key Assigned",0], 
     204: ["No Key Assigned",0], 
     205: ["No Key Assigned",0], 
     206: ["No Key Assigned",0], 
     207: ["No Key Assigned",0], 
     208: ["No Key Assigned",0], 
     209: ["No Key Assigned",0], 
     210: ["No Key Assigned",0], 
     211: ["No Key Assigned",0], 
     212: ["No Key Assigned",0], 
     213: ["No Key Assigned",0], 
     214: ["No Key Assigned",0], 
     215: ["No Key Assigned",0], 
     216: ["No Key Assigned",0], 
     217: ["No Key Assigned",0], 
     218: ["No Key Assigned",0], 
     219: ["[",0], 
     220: ["\\",0], 
     221: ["]",0], 
     222: ["#",0], 
     223: ["No Key Assigned",0], 
     224: ["No Key Assigned",0], 
     225: ["No Key Assigned",0], 
     226: ["No Key Assigned",0], 
     227: ["No Key Assigned",0], 
     228: ["No Key Assigned",0], 
     229: ["No Key Assigned",0], 
     230: ["No Key Assigned",0], 
     231: ["No Key Assigned",0], 
     232: ["No Key Assigned",0], 
     233: ["`",0] 
    }; 

    var KeysPressed =""; 
    var Counter = 0;  
    var ActiveKeys = function(){ 
     document.addEventListener('keydown', function(event) {  
      Listener(event.keyCode,"keydown"); 
     }, false); 
     document.addEventListener('keyup', function(event) { 
     Listener(event.keyCode,"keyup"); 
     }, false);  

     document.removeEventListener('keydown',function(event){ 
        Listener(event.keyCode,"keydown");  
     },false); 
     document.removeEventListener('keyup',function(event){  
     Listener(event.keyCode,"keyup");  
     },false); 
    }  

    var Listener = function(key,mode){ 
     var i = 1; 
     var j = 1;  
     if(mode=="keydown"){ 
      if(Key[key][1]==0){ 
       console.log(Key[key][0]); 
       Key[key][1]=1; 
      }  
     }else if(mode=="keyup"){ 
      if(Key[key][1]>0){ 
       console.log(Key[key][0]); 
       Key[key][1]=0; 
      }    
     } 
    } 

    //Export Library 
    ArcKeyboard.ActiveKeys=ActiveKeys; 
})(ArcKeyboard || (ArcKeyboard={}));

来源

2013-12-13 Archer56

请进行以下更改：在

的开始assing的变量功能

var ArcKeyboard = (function(){ 
    ...

在年底返回的公共职能

//Export Library 
    return { 
     ActiveKeys:ActiveKeys 
    }; 
})();

这里有一个例子工作：http://jsfiddle.net/6rP37/

干杯！

来源

2013-12-13 11:01:11 QuarK

JavaScript事件处理崩溃

回答

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