变量突然变得不确定？

Question

我想了解如何将一些图像加载到JavaScript以使用画布。我想，首先我想借此JSON对象和处理阵列的所有成员...

canvasAssets = [{name:"purple_guy", src:"sprites/purpleguy.png", type: "image"}]; 

function loadAssets(){ 
alert(canvasAssets); // THIS WORKS 
    //parse all assets 
    for(i=0;i<canvasAssets.length;i++){ 
    alert(canvasAssets); //THIS WORKS 
     //image assets 
     if(cavasAssets[i].type == "image"){ //ERRORS HERE saying undefined 
     alert(canvasAssets); 
      name = cavasAssets[i].name; 
      imageAssets[name] = new Image(); 
      imageAssets[name].onload = function(){ 
              completedAssets++; 
              if(completedAssets = canvasAssets.length){ 
               drawCanvas(); 
              } 
             }; 
      imageAssets[name].src = cavasAssets[i].src; 
     } 
    } 
} 

我目前遇到的问题是，suddently在IF（）块if(cavasAssets[i].type == "image")，它说，我的变量是不确定的，我不知道为什么。

Answer 1

您有错字cavasAssets应该是canvasAssets。我会再次查看代码，还有一些我看到后面name = cavasAssets[i].name和imageAssets[name].src = cavasAssets[i].src;只要做一个查找和替换，因为你一直在拼错它。