代码
提交代码
<div class="container">
<img src="https://wiki-code.oss-cn-beijing.aliyuncs.com/html5/img/loading.png" alt="1" data-src="https://wiki-code.oss-cn-beijing.aliyuncs.com/html5/img/photo-3.png">
<img src="https://wiki-code.oss-cn-beijing.aliyuncs.com/html5/img/loading.png" alt="2" data-src="https://wiki-code.oss-cn-beijing.aliyuncs.com/html5/img/photo-3.png">
<img src="https://wiki-code.oss-cn-beijing.aliyuncs.com/html5/img/loading.png" alt="3" data-src="https://wiki-code.oss-cn-beijing.aliyuncs.com/html5/img/photo-3.png">
</div>
<script>
window.onload = function (){//页面加载完之后再加载图片
var a = document.getElementsByTagName("img");//获取图片DOM
for(var i in a){
a[i].src = a[i].getAttribute("data-src")
}
}
</script>
运行结果