延迟加载图片并监听图片加载完成

要求：

图片延迟加载。未加载完显示加载中。监听图片加载完后，加载中消失。

demo:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no">
    <meta name="format-detection" content="telephone=no">
    <script src="zepto.js"></script>
    <title></title>
    <style>
        .mod-load{
            text-align: center;
            padding: 15px 0;
            color: @fontColor4;
            font-size: 12px;
        @-webkit-keyframes loading{
            0%{-webkit-transform: rotate(0deg);}
            50%{-webkit-transform: rotate(180deg);}
            100%{-webkit-transform: rotate(360deg);}
        }
        .icon-loading{
            display: inline-block;
            width: 15px;
            height: 15px;
            vertical-align: -4px;
            margin-right: 6px;

            transform-style: preserve-3d;
            -webkit-backface-visibility: hidden;
            -webkit-animation-name: loading;
            -webkit-animation-duration: 1.2s;
            -webkit-animation-timing-function: linear;
            -webkit-animation-iteration-count: infinite;
            -moz-animation-name: loading;
            -moz-animation-duration: 1.2s;
            -moz-animation-timing-function: linear;
            -moz-animation-iteration-count: infinite;
        }
        .icon-loading.list-noload{
             padding: 10px 0;
             font-size: 14px;
             line-height: 40px;
         }
        }
    </style>
</head>
<body>
<img class="lazyloadImg" data-src="http://tgi12.jia.com/115/444/15444255.jpg"></img>
<img class="lazyloadImg" data-src="http://tgi13.jia.com/115/438/15438819.jpg"></img>
<script>
    var $img=$('.lazyloadImg');
    var $body=$('body');
    var $imgsrc;
    var src;
    var imgLoad;

    for (var i=0;i<$img.length;i++)
    {
        loading();
        $imgsrc=$($img[i]);
        src=$imgsrc.attr('data-src');
        $imgsrc.attr('src',src).removeAttr('data-src');
        imgLoad =document.querySelectorAll(".lazyloadImg")[i];
        imgLoad.addEventListener("load",function(event){
            $('.mod-load').remove();
        });
    }

    function loading(){
        var loadingHtml = '<div class="mod-load list-loading">'
                +   '<img class="icon-loading" src="http://m.baidu.com/static/search/3600/bdoor_loading.png">'
                +   '加载中...'
                + '</div>';
        $(loadingHtml).appendTo($body);
    }
</script>
</body>
</html>
posted @ 2015-12-01 14:02  瑞way  阅读(452)  评论(0)  编辑  收藏  举报