Javascript 预加载图像时出现Internet Explorer循环错误

我创建了一个JavaScript应用程序，它要求首先预加载所有图像。在Firefox中一切正常，但在InternetExplorer中，我的循环跳过了19的计数，转到了21。以前有没有人遇到过这个问题？是什么原因造成的

出于测试目的，您可以复制并粘贴下面的脚本

var preLoad = function () {
    var docImages = ["http://www.sanatural.co.za/media/images/map/rsa_prov.gif", "http://www.sanatural.co.za/media/images/map/loading.gif", "http://www.sanatural.co.za/media/images/map/loading2.gif", "http://www.sanatural.co.za/media/images/map/ec_land.gif", "http://www.sanatural.co.za/media/images/map/ec_roll.gif", "http://www.sanatural.co.za/media/images/map/ec_state.gif", "http://www.sanatural.co.za/media/images/map/fs_land.gif", "http://www.sanatural.co.za/media/images/map/fs_roll.gif", "http://www.sanatural.co.za/media/images/map/fs_state.gif", "http://www.sanatural.co.za/media/images/map/gt_land.gif", "http://www.sanatural.co.za/media/images/map/gt_roll.gif", "http://www.sanatural.co.za/media/images/map/gt_state.gif", "http://www.sanatural.co.za/media/images/map/kzn_land.gif", "http://www.sanatural.co.za/media/images/map/kzn_roll.gif", "http://www.sanatural.co.za/media/images/map/kzn_state.gif", "http://www.sanatural.co.za/media/images/map/lp_land.gif", "http://www.sanatural.co.za/media/images/map/lp_roll.gif", "http://www.sanatural.co.za/media/images/map/lp_state.gif", "http://www.sanatural.co.za/media/images/map/mp_land.gif", "http://www.sanatural.co.za/media/images/map/mp_roll.gif", "mp_state.gif", "http://www.sanatural.co.za/media/images/map/nc_land.gif", "http://www.sanatural.co.za/media/images/map/nc_roll.gif", "http://www.sanatural.co.za/media/images/map/nc_state.gif", "http://www.sanatural.co.za/media/images/map/nw_land.gif", "http://www.sanatural.co.za/media/images/map/nw_roll.gif", "http://www.sanatural.co.za/media/images/map/nw_state.gif", "http://www.sanatural.co.za/media/images/map/wc_land.gif", "http://www.sanatural.co.za/media/images/map/wc_roll.gif", "http://www.sanatural.co.za/media/images/map/wc_state.gif"],
        imageFolder = [],
        loaded = [],
        loadedCounter = 0;

    this.loadImgs = function () {
        for (var i = 0; i < docImages.length; i++) {
            imageFolder[i] = new Image();
            imageFolder[i].src = docImages[i];
            loaded[i] = false;
        }
        intervalId = setInterval(loadedCheck, 10); //  
    };

    function loadedCheck() {
        if (loadedCounter == imageFolder.length) { // all images have been preloaded 
            clearInterval(intervalId);
            alert('All images have been preloaded!');
            return;
        }

        for (var i = 0; i < imageFolder.length; i++) {
            if (loaded[i] === false && imageFolder[i].complete) {
                loaded[i] = true;
                loadedCounter++;
                alert(i); // (work fine in FF but i.e goes from 19 to 21 )
            }
        }
    }
};


var preloadObject = new preLoad();

preloadObject.loadImgs();

var preLoad=函数（）{
var docImages=[”http://www.sanatural.co.za/media/images/map/rsa_prov.gif", "http://www.sanatural.co.za/media/images/map/loading.gif", "http://www.sanatural.co.za/media/images/map/loading2.gif", "http://www.sanatural.co.za/media/images/map/ec_land.gif", "http://www.sanatural.co.za/media/images/map/ec_roll.gif", "http://www.sanatural.co.za/media/images/map/ec_state.gif", "http://www.sanatural.co.za/media/images/map/fs_land.gif", "http://www.sanatural.co.za/media/images/map/fs_roll.gif", "http://www.sanatural.co.za/media/images/map/fs_state.gif", "http://www.sanatural.co.za/media/images/map/gt_land.gif", "http://www.sanatural.co.za/media/images/map/gt_roll.gif", "http://www.sanatural.co.za/media/images/map/gt_state.gif", "http://www.sanatural.co.za/media/images/map/kzn_land.gif", "http://www.sanatural.co.za/media/images/map/kzn_roll.gif", "http://www.sanatural.co.za/media/images/map/kzn_state.gif", "http://www.sanatural.co.za/media/images/map/lp_land.gif", "http://www.sanatural.co.za/media/images/map/lp_roll.gif", "http://www.sanatural.co.za/media/images/map/lp_state.gif", "http://www.sanatural.co.za/media/images/map/mp_land.gif", "http://www.sanatural.co.za/media/images/map/mp_roll.gif“，”mp_state.gif“，”http://www.sanatural.co.za/media/images/map/nc_land.gif", "http://www.sanatural.co.za/media/images/map/nc_roll.gif", "http://www.sanatural.co.za/media/images/map/nc_state.gif", "http://www.sanatural.co.za/media/images/map/nw_land.gif", "http://www.sanatural.co.za/media/images/map/nw_roll.gif", "http://www.sanatural.co.za/media/images/map/nw_state.gif", "http://www.sanatural.co.za/media/images/map/wc_land.gif", "http://www.sanatural.co.za/media/images/map/wc_roll.gif", "http://www.sanatural.co.za/media/images/map/wc_state.gif"],
imageFolder=[]，
已加载=[]，
loadedCounter=0；
this.loadImgs=函数（）{
对于（var i=0；i

原因是索引20上的项目是

“mp_state.gif”

——它缺少完整的url。

---

由于此原因，图像未加载，

.complete

属性设置为false，因此循环跳过此项。

原因是索引20上的项是

“mp_state.gif”

-它缺少完整的url。

---

因此，图像未加载，

.complete

属性设置为false，因此循环跳过此项。

@abatishchev:为什么删除所有绝对URL？这显然会改变code@abatishchev：为什么你删除了所有的绝对URL？这显然改变了代码谢谢，我已经用了很多次了imes，甚至为我创建了一个例外，谢谢。非常感谢，我已经阅读了很多次这段代码，甚至为我创建了一个例外，谢谢。