如何向文本类型输入框添加象形文字?例如，我想在用户名输入中有'icon-user'，就像这样:
当前回答
这个“欺骗”的副作用是，glyphicon类会改变输入控件的字体。
小提琴
<input class="form-control glyphicon" type="search" placeholder=""/>
如果你想摆脱副作用，你可以删除“glyphicon”类，并添加以下CSS(可能有更好的方法来设置占位符伪元素，我只在Chrome上测试过)。
小提琴
.form-control[type="search"]::-webkit-input-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control[type="search"]:-moz-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control[type="search"]::-moz-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control[type="search"]:-ms-input-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
可能有一个更干净的解决方案:
小提琴
CSS
.form-control.glyphicon {
font-family:inherit;
}
.form-control.glyphicon::-webkit-input-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control.glyphicon:-moz-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control.glyphicon::-moz-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control.glyphicon:-ms-input-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
HTML
<input class="form-control glyphicon" type="search" placeholder=" search" />
<input class="form-control glyphicon" type="text" placeholder=" username" />
<input class="form-control glyphicon" type="password" placeholder=" password" />
其他回答
以下是它在纯Bootstrap 5中的工作原理:
<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>iconbutton</title> <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0-beta1/dist/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.1.1/css/all.min.css" rel="stylesheet"> </head> <body> <div class="d-flex flex-row align-items-center m-4 border rounded"> <i class="fa-solid fa-search mx-2"></i> <input type="text" class="form-control border-0" placeholder="Search"> </div> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0-beta1/dist/js/bootstrap.bundle.min.js"></script> </body> </html>
若要删除出现在焦点上的边框，请向输入添加shadow-0。
下面是我如何使用默认的引导CSS v3.3.1:
<div class="form-group">
<label class="control-label">Start:</label>
<div class="input-group">
<input type="text" class="form-control" aria-describedby="start-date">
<span class="input-group-addon" id="start-date"><span class="glyphicon glyphicon-calendar"></span></span>
</div>
</div>
这是它的样子:
您应该能够使用现有的引导类和一些自定义样式来实现这一点。
<form>
<div class="input-prepend">
<span class="add-on">
<i class="icon-user"></i>
</span>
<input class="span2" id="prependedInput" type="text" placeholder="Username" style="background-color: #eeeeee;border-left: #eeeeee;">
</div>
编辑图标是通过图标用户类引用的。这个答案是在Bootstrap版本2的时候写的。你可以在下面的页面上看到参考:http://getbootstrap.com/2.3.2/base-css.html#images
这个“欺骗”的副作用是，glyphicon类会改变输入控件的字体。
小提琴
<input class="form-control glyphicon" type="search" placeholder=""/>
如果你想摆脱副作用，你可以删除“glyphicon”类，并添加以下CSS(可能有更好的方法来设置占位符伪元素，我只在Chrome上测试过)。
小提琴
.form-control[type="search"]::-webkit-input-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control[type="search"]:-moz-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control[type="search"]::-moz-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control[type="search"]:-ms-input-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
可能有一个更干净的解决方案:
小提琴
CSS
.form-control.glyphicon {
font-family:inherit;
}
.form-control.glyphicon::-webkit-input-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control.glyphicon:-moz-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control.glyphicon::-moz-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
.form-control.glyphicon:-ms-input-placeholder:first-letter {
font-family:"Glyphicons Halflings";
}
HTML
<input class="form-control glyphicon" type="search" placeholder=" search" />
<input class="form-control glyphicon" type="text" placeholder=" username" />
<input class="form-control glyphicon" type="password" placeholder=" password" />
对于Bootstrap 3.3.5，我也有一个决定:
<div class="col-sm-5">
<label for="date">
<input type="date" placeholder="Date" id="date" class="form-control">
</label>
<i class="glyphicon glyphicon-calendar col-sm-pull-2"></i>
</div>
对于输入，我有这样的东西:
