我的代码中的事件侦听器和图像加载器有问题。当我尝试根据事件侦听器加载和检查加载图像的状态时,一些图像被跳过。我认为浏览器只能处理一个事件,当活动的一个没有停止时,下一个可以工作并跳过它的工作。很少有图像返回错误状态并且可以使用。请给我一些建议。这是我的代码:
//Image loader
var urlList = [
'images/ground_02.png', // 0 - FG
'images/ground_layer0.png', // 1 - CITY
...
];
var urlListLength = urlList.length; //length of URL-array
var iCount = new Number(0); // Create zero-counter
var images = new Array(); // All images array. Each elem stores one image
var imageInfo = function(imageName, imageCount, imageWidth, imageHeight) { // Constructor for image data container
this.imageName = imageName; // Url of image
this.imageCount = imageCount; // Frames
this.imageWidth = imageWidth; // Width of images
this.imageHeight = imageHeight; // Height of images
};
var imageData = new Array(); // Images data array
for (var i=0; i!=urlListLength; ++i) { // Loop for each image load
images[i] = new Image(); // Image array.
images[i].addEventListener('load', function(i) {
imageData.push(new imageInfo(images[iCount], images[iCount].width/images[iCount].height, images[iCount].width, images[iCount].height));
iCount++;
if (iCount == urlListLength) {
var loaded = true;
loop();
};
}, false);
images[i].src = urlList[i];
images[i].onerror=function() {
alert("FAIL "+this.src);
};
};