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javascript - Bootstrap-Navigationsleiste ist aus unerklärlichen Gründen um 20 Pixel größer, was ist los?
为情所困
为情所困 2017-07-05 10:42:51
0
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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>html</title>
    <link rel="stylesheet" href="./rule/bootstrap-Normalize.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
    <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
</head>
<body>
    <nav class="navbar navbar-inverse navbar-fixed-top">
        <p class="container">
            <!-- Brand and toggle get grouped for better mobile display -->
            <p class="navbar-header">
                <button type="button" class="navbar-toggle collapase" data-toggle="collapase" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                    <span class="sr-only">Toggle navigation</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand" href="#">Brand</a>
            </p>
            <!-- Collect the nav links, forms, and other content for toggling -->
            <p class="collapse navbar-collapse" id="bs-example-navbar-collapse-1" >
                <ul class="nav navbar-nav">
                    <li class="active"><a href="#">Link <span class="sr-only"></span></a>Link</li>
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
                        <ul class="dropdown-menu">
                            <li><a href="#">Action</a></li>
                            <li><a href="#">Another action</a></li>
                            <li><a href="#">Something else here</a></li>
                            <li><a role="separator" href="#"></a></li>
                            <li><a href="#">Separated link</a></li>
                            <li><a role="separator" href="#"></a></li>
                            <li><a href="#">One more separated link</a></li>
                        </ul>
                    </li>
                </ul>
            </p>
        </p>
    </nav>
    <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
    <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
    <!-- Include all compiled plugins (below), or include inpidual files as needed -->
    <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <script src="main.js">
    </script>
</body>
</html>
为情所困
为情所困

Antworte allen(3)
習慣沉默
習慣沉默2017-07-05 10:44:51 3 Etage

这是因为，Bootstrap的导航栏只是默认是51px高，而并非永远是51px高，如果其中有元素出现多行，是会将高度撑高的。

你的demo里，由于有一个标签多了一个Link，所以将整个导航栏撑高了20px。

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某草草
某草草2017-07-05 10:44:51 2 Etage

是不是框架给的? marign:0 或者padding:0 有木有效

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代言
代言2017-07-05 10:44:51 1 Etage

你可以在控制台DOM树上找到导航栏，然后一个一个的从里往外删元素，排查到是哪个元素导致的

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