如何使用带Vue的bootstrap 4创建移动导航栏？

Question

我正在努力用vue成功创建一个带有bootstrap 4的导航栏。这是我在App.vue中的代码：

的NavBar

<b-navbar-nav>
  <b-nav-item href="#">Link</b-nav-item>
  <b-nav-item href="#" disabled>Disabled</b-nav-item>
</b-navbar-nav>

<!-- Right aligned nav items -->
<b-navbar-nav class="ml-auto">

  <b-nav-form>
    <b-form-input size="sm" class="mr-sm-2" type="text" placeholder="Search"/>
    <b-button size="sm" class="my-2 my-sm-0" type="submit">Search</b-button>
  </b-nav-form>

  <b-nav-item-dropdown text="Lang" right>
    <b-dropdown-item href="#">EN</b-dropdown-item>
    <b-dropdown-item href="#">ES</b-dropdown-item>
    <b-dropdown-item href="#">RU</b-dropdown-item>
    <b-dropdown-item href="#">FA</b-dropdown-item>
  </b-nav-item-dropdown>

  <b-nav-item-dropdown right>
    <!-- Using button-content slot -->
    <template slot="button-content">
      <em>User</em>
    </template>
    <b-dropdown-item href="#">Profile</b-dropdown-item>
    <b-dropdown-item href="#">Signout</b-dropdown-item>
  </b-nav-item-dropdown>
</b-navbar-nav>

导航栏出现在桌面上，但在移动导航栏崩溃时效果不佳。 NavBar品牌浮动到左侧image of what it looks like

Answer 1

看一下Bootstrap-Vue文档，似乎那里的问题（以及你的代码也是如此）标记将b-navbar-toggle放在b-navbar-brand之前，所以当屏幕尺寸减小时，按钮出现之前品牌，导致你看到的结果。只需将b-navbar-toggle移动到折叠部分的开始标记之前，您就可以得到正确的结果。

<b-navbar toggleable="md" type="dark" variant="info">
  <b-navbar-brand href="#">NavBar</b-navbar-brand>

  <!-- Put the toggle here after the brand -->
  <b-navbar-toggle target="nav_collapse"></b-navbar-toggle>

  <b-collapse is-nav id="nav_collapse">

    <b-navbar-nav>
      <b-nav-item href="#">Link</b-nav-item>
      <b-nav-item href="#" disabled>Disabled</b-nav-item>
    </b-navbar-nav>

    <!-- Right aligned nav items -->
    <b-navbar-nav class="ml-auto">

      <b-nav-form>
        <b-form-input size="sm" class="mr-sm-2" type="text" placeholder="Search"/>
        <b-button size="sm" class="my-2 my-sm-0" type="submit">Search</b-button>
      </b-nav-form>

      <b-nav-item-dropdown text="Lang" right>
        <b-dropdown-item href="#">EN</b-dropdown-item>
        <b-dropdown-item href="#">ES</b-dropdown-item>
        <b-dropdown-item href="#">RU</b-dropdown-item>
        <b-dropdown-item href="#">FA</b-dropdown-item>
      </b-nav-item-dropdown>

      <b-nav-item-dropdown right>
        <!-- Using button-content slot -->
        <template slot="button-content">
          <em>User</em>
        </template>
        <b-dropdown-item href="#">Profile</b-dropdown-item>
        <b-dropdown-item href="#">Signout</b-dropdown-item>
      </b-nav-item-dropdown>
    </b-navbar-nav>

  </b-collapse>


</b-navbar>