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<title>每天一个JavaScript实例-推断图片是否载入完毕</title>
<script>
window.onload= function(){
//clearTimeout(clock);
alert("载入完毕");
}
var item = document.getElementsByTagName("img");
var clock = setTimeout(function(){
//var item = document.getElementsByTagName("img");
//console.log(item);
//console.log(item.item(item.length-1).onload);
if(item.item(item.length-1).onload == null){
alert("还没载入完毕呢！");}
},1000)
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<img src="http://i1.hoopchina.com.cn/blogfile/201401/13/BbsImg138957793449615_500*311.jpg" />
<img src="http://www.xyzwallpaper.com/wp-content/uploads/2014/07/girl-wallpaper-300x300.jpg" />
<img src="http://www.xyzwallpaper.com/wp-content/uploads/2014/07/girl-wallpaper-2-300x300.jpg" />
<img src="http://www.xyzwallpaper.com/wp-content/uploads/2014/07/girl-wallpaper-3-300x300.jpg" />
<img src="http://www.xyzwallpaper.com/wp-content/uploads/2014/07/girl-wallpaper-4-300x300.jpg" />
<img src="http://bestpaperz.com/data_images/out/40/8903786-shakira-in-the-chair.jpg" />
<img src="http://bestpaperz.com/data_images/out/40/8903770-red-currant.jpg" />
<img src="http://i1.hoopchina.com.cn/blogfile/201401/13/BbsImg138957793449615_500*311.jpg" />
<img src="http://bestpaperz.com/data_images/out/40/8903733-failed-surfing.jpg" />
<img src="http://bestpaperz.com/data_images/out/40/8903738-robert-pattinson.jpg" />
<img src="http://i1.hoopchina.com.cn/blogfile/201401/13/BbsImg138957793449615_500*311.jpg" />
<img src="http://bestpaperz.com/data_images/out/40/8903728-empty-bench.jpg" />
<img src="http://i1.hoopchina.com.cn/blogfile/201401/13/BbsImg138957793449615_500*311.jpg" />
<img src="http://bestpaperz.com/data_images/out/40/8903801-snow-park.jpg" />
</body>
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