tryjsref_img_alt 在线代码实例

 <img id="compman" src="/upload2/statics/images/w3c/eg_compman.gif" alt="Crazy computerman" width="107" height="98">

<p>The value of the alt atrribute is: 
<script>
document.write(document.getElementById("compman").alt);
</script>
</p>