代码示例:(标识:eg_css3_text-overflow_hover)
<!DOCTYPE html>
<html>
<head>
<style> 
div.test
{
white-space:nowrap; 
width:12em; 
overflow:hidden; 
border:1px solid #000000;
}

div.test:hover
{
text-overflow:inherit;
overflow:visible;
}
</style>

</head>

<body>

<p>如果您把光标移动到下面两个 div 上,就能够看到全部文本。</p>

<p>这个 div 使用 "text-overflow:ellipsis" :</p>

<div class="test" style="text-overflow:ellipsis;">This is some long text that will not fit in the box</div>

<p>这个 div 使用 "text-overflow:clip":</p>

<div class="test" style="text-overflow:clip;">This is some long text that will not fit in the box</div>

</body>
</html>
运行结果: