加载图片进度

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<body>
<div class="mask"></div>
<div class="percent"></div>
<script src="./app/assets/js/jquery.min.js"></script>
<script>
    function loading(){
        function Load(){}
        Load.prototype.loadImgs = function(urls,callback) {
            this.urls = urls;
            this.imgNumbers = urls.length;
            this.loadImgNumbers = 0;
            var that =this;
            for(var i=0;i<urls.length;i++){
                var obj = new Image();
                obj.src = urls[i];
                obj.onload = function(){
                    that.loadImgNumbers++;
                    callback(parseInt((that.loadImgNumbers/that.imgNumbers)*100));
                };
                document.body.appendChild(obj);
            }
        };

        var loader = new Load();

        loader.loadImgs([
            // 将所有需要加载的图片地址写于此处
            "https://ss1.bdstatic.com/70cFuXSh_Q1YnxGkpoWK1HF6hhy/it/u=3549496778,2425390027&fm=200&gp=0.jpg",
            "https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=866451030,2521292954&fm=27&gp=0.jpg",
            "https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=1592505045,1659704969&fm=200&gp=0.jpg",
            "https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=3262163130,1934581225&fm=27&gp=0.jpg",
            "https://ss0.bdstatic.com/70cFuHSh_Q1YnxGkpoWK1HF6hhy/it/u=4255272324,1037803712&fm=200&gp=0.jpg",
            "https://ss1.bdstatic.com/70cFuXSh_Q1YnxGkpoWK1HF6hhy/it/u=2992708785,1786612812&fm=200&gp=0.jpg",
            "https://ss1.bdstatic.com/70cFuXSh_Q1YnxGkpoWK1HF6hhy/it/u=3986646060,1869274485&fm=27&gp=0.jpg",
            "https://ss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=3837317128,620771623&fm=27&gp=0.jpg",
            "https://ss0.bdstatic.com/70cFuHSh_Q1YnxGkpoWK1HF6hhy/it/u=560913058,44200008&fm=27&gp=0.jpg",
            "https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=45247271,400854699&fm=200&gp=0.jpg"
        ],function(percent){
            // 假设显示百分比的元素为 $(".percent")
            $(".percent").text(percent+'%');


            // 加载结束后,隐藏相应的 loading 或遮罩
            if(percent==100) {
                $(".mask").css('display','none');
            }
        });
    }
    // 执行 loading 方法
    loading();
</script>
</body>
</html>

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转载自blog.csdn.net/web_cgh/article/details/80622993