带引导选择的输入组插件
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【中文标题】带引导选择的输入组插件【英文标题】：input-group-addon with bootstrap-select 【发布时间】：2014-11-21 03:26:55 【问题描述】：我尝试将 Label 2 与 bootstrap-select 一起使用，但它看起来与 bootstrap 不同（Label 1 em>) 一。如何让下面代码中的两个标签看起来一样？
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="description" content="">
<meta name="author" content="">
<link rel="shortcut icon" href="../../docs-assets/ico/favicon.png">
<title>Test</title>
<link rel="stylesheet" type="text/css" href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" >
<link rel="stylesheet" type="text/css" href="//cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.6.2/css/bootstrap-select.min.css">
<link href="http://getbootstrap.com/examples/non-responsive/non-responsive.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="col-lg-6">
<div class="input-group">
<span class="input-group-addon">Labe 1</span>
<input type="text" class="form-control" name="snpid" placeholder="Test">
<span class="input-group-btn">
<button class="btn btn-default" type="submit">GO!</button>
</span>
</div><!-- /input-group -->
</div><!-- /.col-lg-6 -->
<div>
<BR/>
<HR>
<div class="container">
<form class="form-inline">
<div class="form-group">
<span class="input-group-addon">Label 2</span>
</div>
<div class="form-group">
<select id="lunch" class="selectpicker" data-live-search="true" title="Please select a lunch ...">
<option>Hot Dog, Fries and a Soda</option>
<option>Burger, Shake and a Smile</option>
<option>Sugar, Spice and all things nice</option>
<option>Baby Back Ribs</option>
<option>A really really long option made to illustrate an issue with the live search in an inline form</option>
</select>
</div>
</form>
<div>
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
<script type="text/javascript" src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.6.2/js/bootstrap-select.min.js"></script>
<script>
$('.selectpicker').selectpicker();
</script>
</body>
</html>
【问题讨论】：
根据getbootstrap.com/components/#input-groups，您应该“避免在此处使用 【参考方案1】：来自引导程序docs：
通过在任何基于文本的
<input>之前、之后或两侧添加文本或按钮来扩展表单控件。使用.input-group和.input-group-addon或.input-group-btn将元素添加到单个.form-control。
您需要将select 和.input-group-addon 包装在.input-group 中：
<div class="input-group">
<span class="input-group-addon">Label 2</span>
<select id="lunch" class="selectpicker form-control" data-live-search="true" title="Please select a lunch ...">
<option>Hot Dog, Fries and a Soda</option>
<option>Burger, Shake and a Smile</option>
<option>Sugar, Spice and all things nice</option>
<option>Baby Back Ribs</option>
<option>A really really long option made to illustrate an issue with the live search in an inline form</option>
</select>
</div>
检查一下：
<link rel="stylesheet" type="text/css" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<div class="container">
<div class="col-lg-6">
<div class="input-group">
<span class="input-group-addon">Labe 1</span>
<input type="text" class="form-control" name="snpid" placeholder="Test">
<span class="input-group-btn">
<button class="btn btn-default" type="submit">GO!</button>
</span>
</div>
</div>
<br>
<hr>
<div class="container">
<form class="form-inline">
<div class="input-group">
<span class="input-group-addon">Label 2</span>
<select id="lunch" class="selectpicker form-control" data-live-search="true" title="Please select a lunch ...">
<option>Hot Dog, Fries and a Soda</option>
<option>Burger, Shake and a Smile</option>
<option>Sugar, Spice and all things nice</option>
<option>Baby Back Ribs</option>
<option>A really really long option made to illustrate an issue with the live search in an inline form</option>
</select>
</div>
</form>
</div>
</div>【讨论】：
在我的浏览器中，选择是四舍五入的，这使得它不“适合”标签。你也有这种情况吗？ 在我的浏览器中有标准选择，问题是关于bootstrap-select，附加到Bootstrap！【参考方案2】：我已经用额外的 CSS 修改了 caeth 的解决方案，以确保选择按钮在各自的角处是圆角的。
HTML
<form class="form-inline">
<div class="input-group">
<span class="input-group-addon">Label</span>
<select id="lunch" class="selectpicker form-control" data-live-search="true" title="Please select a lunch ...">
<option>Hot Dog, Fries, and a Soda</option>
<option>Burger, Shake, and a Smile</option>
<option>Sugar, Spice, and all things nice</option>
<option>Baby Back Ribs</option>
<option>A really really long option made to illustrate an issue with the live search in an inline form</option>
</select>
</div>
</form>
CSS
.input-group > .input-group-btn:last-child > .selectpicker
border-top-right-radius: 5px;
border-bottom-right-radius: 5px;
.input-group > .input-group-btn:first-child > .selectpicker
border-top-left-radius: 5px;
border-bottom-left-radius: 5px;
在这里查看：http://jsfiddle.net/xr4uofje/130/
【讨论】：
【参考方案3】：我刚刚找到了一种简单的方法，可以在 select 中包含附加组件（没有 bootstrap-select）。这个答案可能与 bootstrap-select 问题没有严格的关系，但可能对登陆这里寻找这个答案的人有所帮助（就像我所做的那样）。我只是将选择移动到附加组件下，边距：-4px，然后像这样在宽度上添加 4 个像素
.input-group select.form-control
margin-left: -4px;
width: calc(100% + 4px);
然后我为插件设置一个相对位置和 z-index，如下所示：
.input-group .input-group-addon
z-index: 5;
position: relative;
希望对你有帮助
【讨论】：
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