新手学DOM的一些问题
<body onload="onlod();"><h1>Snapshots</h1>
<ul id="imagegallery">
<li>
<a href="images/fireworks.jpg" title="A fireworks display">
<img src="images/thumbnail_fireworks.jpg" alt="Fireworks" />
</a>
</li>
<li>
<a href="images/coffee.jpg" title="A cup of black coffee" >
<img src="images/thumbnail_coffee.jpg" alt="Coffee" />
</a>
</li>
<li>
<a href="images/rose.jpg" title="A red, red rose">
<img src="images/thumbnail_rose.jpg" alt="Rose" />
</a>
</li>
<li>
<a href="images/bigben.jpg" title="The famous clock">
<img src="images/thumbnail_bigben.jpg" alt="Big Ben" />
</a>
</li>
</ul>
<img id="placeholder" src="images/placeholder.gif" alt="my image gallery" />
<p id="description">Choose an image.</p>
</body>
我的js代码 <script>
function onlod(){
var ids = document.getElementById("imagegallery");
var a = ids.getElementsByTagName("*");
alert(a);
}
</script> 请问我想取出 <a href 里的 title 怎么取出来啊
