一个比较常见的需求，当一段文本过长时，不换行，显示…
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>test57</title>
</head>
<body>
<div class="test">
<p>asd asdasdasdas dasdasda sdasd</p>
</div>
</body>
<style>
.test {
width: 50px;
border: 1px solid #000;
}
.test p {
white-space:nowrap;
overflow:hidden;
text-overflow:ellipsis;
}
</style>
</html>
