js加载所有图片资源，加载完毕再进行后续动作。
JFunction.PreLoadData = function (url {
if (typeof url == 'undefined' {
url = '';
}
var loadedNum = 0;//已加载资源数量
var resourceNum = 0;//资源数量
var postAction = function ( {
};//资源加载完成后的回调函数
function imageLoadPost( {//每成功加载一个图片执行一次
loadedNum++;
if (loadedNum >= resourceNum {//全部图片文件加载完后，继续加载声音
loadedNum = 0;
resourceNum = 0;
loadAudio(;
}
}
function audioLoadPost( {//每成功加载一个声音执行一次
loadedNum++;
if (loadedNum >= resourceNum {//全部声音文件加载完后，执行回调函数
postAction(;
}
}
function loadImage( {//加载图片
for (var m2 in ResourceData.Images resourceNum++;
if (resourceNum == 0 {
imageLoadPost(;
} else {
for (var m2 in ResourceData.Images {
ResourceData.Images[m2].data = new Image(;
ResourceData.Images[m2].data.src = url + ResourceData.Images[m2].path;
ResourceData.Images[m2].data.onload = function ( {
imageLoadPost(;
}
ResourceData.Images[m2].data.onerror = function ( {
alert('图片资源 ' + ResourceData.Images[m2].data.src + ' 加载失败！';
return;
}
}
}
}
function loadAudio( {//加载声音
for (var m1 in ResourceData.Sound resourceNum++;
if (resourceNum == 0 {
audioLoadPost(;
} else {
for (var m1 in ResourceData.Sound {
ResourceData.Sound[m1].data = new Audio(;
var playMsg = ResourceData.Sound[m1].data.canPlayType('video/ogg';//测试浏览器是否支持该格式声音
if ("" != playMsg {
ResourceData.Sound[m1].data.src = url + ResourceData.Sound[m1].path;
} else {
ResourceData.Sound[m1].data.src = url + ResourceData.Sound[m1].path;
}
ResourceData.Sound[m1].data.addEventListener("canplaythrough", function ( {
audioLoadPost(;
}, false;
ResourceData.Sound[m1].data.addEventListener("error", function ( {
alert('声音资源 ' + url + ResourceData.Sound[m1].path + ' 加载失败！';
return;
}, false;
}
}
}
loadImage(;
return {
done: function (f {
if (f postAction = f;
}
}
};