bootstrap-4 - radius - border success bootstrap




右側的Bootstrap 4導航欄項目 (6)

使用Bootstrap v4.0.0-alpha.6:兩個 <ul> s( .navbar-na ),一個使用 .mr-auto ,另一個使用 .ml-auto

<nav ...> 
  ...     
  <div class="collapse navbar-collapse">
    <ul class="navbar-nav mr-auto">
      <li class="nav-item active">
        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Left Link </a>
      </li>
    </ul>
    <ul class="navbar-nav ml-auto">
      <li class="nav-item">
        <a class="nav-link" href="#">Right Link </a>
      </li>
    </ul>
  </div>
</nav>

這個問題在這裡已有答案:

我剛剛切換到bootstrap 4並重新編寫我的所有html和scss來處理它,我似乎無法找到如何在導航欄的右側放置一組導航項。 這是我的導航欄代碼:

<nav class="navbar navbar-full navbar-dark bg-primary">
        <button class="navbar-toggler hidden-md-up" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation"></button>
        <%= link_to "Living Recipe", recipes_path(sort_attribut: "popularity", sort_order: :desc), class: "navbar-brand" %>
        <div class="collapse navbar-toggleable-sm" id="navbarResponsive">   
            <ul class="nav navbar-nav float-md-left">
                <li class="nav-item">
                    <%= form_tag(recipes_path, :method => "get", id: "search-form", class: "form-inline") do %>
                            <%= text_field_tag :search, params[:search], placeholder: "Search Recipes", class: "form-control col-md-8" %>
                    <% end %>
                </li>
                <li class="nav-item dropdown">
                    <a class="nav-link dropdown-toggle" href="http://example.com" id="responsiveNavbarDropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Browse</a>
                    <div class="dropdown-menu" aria-labelledby="responsiveNavbarDropdown">
                        <%= link_to "Popular", recipes_path(sort_attribute: "popularity", sort_order: :desc), class: "dropdown-item" %>
                        <%= link_to "Newest", recipes_path(sort_attribute: "created_at", sort_order: :desc), class: "dropdown-item" %>
                        <%= link_to "Most Updated", recipes_path(sort_attribute: "most_active", sort_order: :desc), class: "dropdown-item" %>
                        <%= link_to "Most Saved", recipes_path(sort_attribute: "save_count", sort_order: :desc), class: "dropdown-item" %>
                    </div>
                </li>
            </ul>
            <ul class="nav navbar-nav float-md-right">
                <% if user_signed_in? %>
                    <li class="dropdown">
                        <a class="nav-link dropdown-toggle" href="http://example.com" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                            <%= current_user.displayname.present? ? "D-ring" : current_user.firstname %>
                        </a>
                        <div class="dropdown-menu" aria-labelledby="responsiveNavbarDropdown">
                            <%= link_to "Profile", user_path(current_user.id), class: "dropdown-item" %>
                            <%= link_to "Recipe Box", user_saved_recipes_path(current_user.id), class: "dropdown-item" %>
                            <%= link_to "Add Recipe", new_recipe_path, class: "dropdown-item" %>
                            <%= link_to "Submitted Recipes", user_path(current_user.id), class: "dropdown-item" %>
                            <%= link_to "Sign Out", destroy_user_session_path, :method => :delete, class: "dropdown-item" %>
                        </div>
                    </li>
                <% else %>
                    <li class="nav-item">
                        <%= link_to "Create Account", '', data: {:'toggle' => 'modal', :'target' => '#signupModal'}, class: "nav-link" %>
                    </li>
                    <li class="nav-item">
                        <%= link_to "Login", '', data: {:'toggle' => 'modal', :'target' => '#loginModal'}, class: "nav-link" %>
                    </li>           
                <% end %>
            </ul>
        </div>
    </nav>

這是它的樣子截圖


在Bootstrap 4 alpha-6版本中,由於導航欄使用的是flex模型,您可以在parent的div中使用 justify-content-end 並刪除 mr-auto

<div class="collapse navbar-collapse justify-content-end" id="navbarText">
  <ul class="navbar-nav">
    <li class="nav-item active">
      <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="#">Link</a>
    </li>
    <li class="nav-item">
      <a class="nav-link disabled" href="#">Disabled</a>
    </li>
  </ul>
</div>

這就像一個魅力:)


就我而言,我一直在尋找一種解決方案,允許 其中一個 導航欄項目正確對齊。 為此,您必須添加 style="width:100%;"<ul class="navbar-nav"> 然後 ml-auto 類添加到導航欄項。


這應該適用於alpha 6.關鍵是左側導航欄中的“mr-auto”類,它會將右側導航向右推。 您還需要添加navbar-toggleable-md,否則它將堆疊在一列而不是一行中。 注意我沒有添加剩餘的切換項(例如切換按鈕),我添加了足夠的以使其按要求格式化。 以下是更完整的示例 https://v4-alpha.getbootstrap.com/examples/navbars/

<!DOCTYPE html>
<html lang="en">
<head>
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet" />
</head>
<body>
    <nav class="navbar navbar-toggleable-md navbar-light bg-faded">
        <div class="container">
            <a class="navbar-brand" href="#">Navbar</a>
            <ul class="nav navbar-nav mr-auto">
                <li class="nav-item active">
                    <a class="nav-link" href="#">Home</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">Link</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">Link</a>
                </li>
            </ul>
            <ul class="nav navbar-nav">
                <li class="nav-item">
                    <a class="nav-link" href="#">Link on the Right</a>
                </li>
            </ul>
        </div>
    </nav>
</body>

我有一個帶有左對齊和右對齊導航鏈接的工作代碼集,它們都會在父標記上使用 .justify-content-between 一起折疊成響應式菜單: https://codepen.io/epan/pen/bREVVW?editors=1000.justify-content-between https://codepen.io/epan/pen/bREVVW?editors=1000

<nav class="navbar navbar-toggleable-sm navbar-inverse bg-inverse">
  <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbar"     aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <a class="navbar-brand" href="#">Acme</a>
  <div class="collapse navbar-collapse justify-content-between" id="navbar">
    <div class="navbar-nav">
      <a class="nav-item nav-link" href="#">Ball Bearings</a>
      <a class="nav-item nav-link" href="#">TNT Boxes</a>
    </div>
    <div class="navbar-nav">
      <a class="nav-item nav-link" href="#">Logout</a>
    </div>
  </div>
</nav>

TL; DR:

為右側所需的導航欄項創建另一個 <ul class="navbar-nav ml-auto">
ml-auto 會將你的 navbar-nav 到右邊, mr-auto 將把它拉到左邊。

針對Bootstrap v4.1.3進行了測試

<!DOCTYPE html>
<html lang="en">
<head>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"/>
  <style>
    /*  preview fix, please ignore */
    .navbar-nav {
      flex-direction: row;
    }
    
    .nav-link {
      padding-right: .5rem !important;
      padding-left: .5rem !important;
    }
    
    /* Fixes dropdown menus placed on the right side */
    .ml-auto .dropdown-menu {
      left: auto !important;
      right: 0px;
    }
  </style>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-primary rounded">
  <a class="navbar-brand" href="#">Navbar</a>
  <ul class="navbar-nav mr-auto">
    <li class="nav-item active">
      <a class="nav-link">Left Link 1</a>
    </li>
    <li class="nav-item">
      <a class="nav-link">Left Link 2</a>
    </li>
  </ul>
  <ul class="navbar-nav ml-auto">
    <li class="nav-item">
      <a class="nav-link">Right Link 1</a>
    </li>
    <li class="nav-item dropdown">
      <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">            Dropdown on Right</a>
      <div class="dropdown-menu" aria-labelledby="navbarDropdown">
        <a class="dropdown-item" href="#">Action</a>
        <a class="dropdown-item" href="#">Another action with a lot of text inside of an item</a>
      </div>
    </li>
  </ul>
</nav>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
</body>
</html>

正如您所看到的,已添加其他樣式規則以解決s預覽框中的一些奇怪問題。
您應該能夠安全地忽略項目中的這些規則。

從v4.0.0開始,這似乎是正式的方法。

編輯: 我根據@Bruno的建議修改了Post以包含放置在導航欄右側的下拉列表。 它需要將其 right 屬性反轉。 我在示例代碼的開頭添加了一個額外的css片段。
請注意,當您單擊“ Run code snippet 按鈕時,該示例將顯示移動版本。 要查看桌面版本,您必須單擊“ Expand snippet 按鈕。

.ml-auto .dropdown-menu {
    left: auto !important;
    right: 0px;
}

在樣式表中包含這個應該可以解決問題。







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