Bootstrap 输入组的用法
通过将前置和附加内容添加到输入字段，可以将公共元素添加到用户的输入中。例如，您可以添加美元符号，@作为Twitter用户名或其他任何可能对于您的应用程序界面通用的符号。
示例
您可以尝试运行以下代码来创建Bootstrap输入组
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Input Group</title>
<link href = "/bootstrap/css/bootstrap.min.css" rel = "stylesheet">
<script src = "/scripts/jquery.min.js"></script>
<script src = "/bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
<div style = "padding: 100px 100px 10px;">
<form class = "bs-example bs-example-form" role = "form">
<div class = "input-group">
<span class = "input-group-addon">@</span>
<input type = "text" class = "form-control" placeholder = "twitterhandle">
</div>
<br>
<div class = "input-group">
<input type = "text" class = "form-control">
<span class = "input-group-addon">.00</span>
</div>
<br>
<div class = "input-group">
span class = "input-group-addon">$</span>
<input type = "text" class =" form-control">
<span class = "input-group-addon">.00</span>
</div>
</form>
</div>
</body>
</html>