【text_overflow】
<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
.test {
width: 150px;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
</style>
</head>
<body>
<div class="test">This is a test. This is a test.This is a test.</div>
</body>
</html>
