使用Bootstrap为输入添加反馈图标
要添加反馈图标，请在Bootstrap中使用.has-feedback类。
您可以尝试运行以下代码来设置反馈图标-
示例
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</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 class = "form-group has-feedback">
<label class = "col-sm-2 control-label" for = "inputSuccess">Example</label>
<div class="col-sm-10">
<input type = "text" class="form-control" id = "inputSuccess">
<span class = "glyphicon glyphicon-ok form-control-feedback"></span>
</div>
</div>
</body>
</html>