如何更改2个不同的Bootstrap Modals＆＃39;背景颜色？

Question

创建Bootstrap模式时，将.modal-backdrop添加到HTML的末尾以创建背景颜色。我可以通过改变该类的颜色来手动切换颜色，但是我想根据触发的2个模态中的哪一个来切换该类的颜色。

我目前正在使用兄弟选择器来尝试区分我喜欢的颜色，但无论调用哪种模式，它现在都会显示＃000。

CSS：

.modal-backdrop {
  background-color: #fff;
}
.card-modal ~ .modal-backdrop {
  background-color: #000;
}

Answer 1

$(".modal1").on('shown.bs.modal', function() {
  $('.modal-backdrop').css('background', 'red');
});

$(".modal1").on('hidden.bs.modal', function() {
  $('.modal-backdrop').css('background', '#000');
});

.wrap {
  padding: 15px;
}
h1 {
  font-size: 28px;
}
h4,
modal-title {
  font-size: 18px;
  font-weight: bold;
}
.no-borders {
  border: 0px;
}
.body-message {
  font-size: 18px;
}
.centered {
  text-align: center;
}
.btn-primary {
  background-color: #2086c1;
  border-color: transparent;
  outline: none;
  border-radius: 8px;
  font-size: 15px;
  padding: 10px 25px;
}
.btn-primary:hover {
  background-color: #2086c1;
  border-color: transparent;
}
.btn-primary:focus {
  outline: none;
}
.model1 .modal-backdrop {
  background: red;
}

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>

<div class="wrap">
  <h1>Bootstrap Modal Example</h1>
  <button type="button" class="btn btn-primary" data-toggle="modal" data-target=".modal1">
    Modal 1
  </button>
</div>

<div class="modal fade modal1" tabindex="-1" role="dialog" aria-labelledby="modal1" aria-hidden="true">

  <div class="modal-dialog modal-lg">

    <!-- Modal Content: begins -->
    <div class="modal-content">

      <!-- Modal Header -->
      <div class="modal-header no-borders">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span>
        </button>
        <h4 class="modal-title" id="gridSystemModalLabel"></h4>
      </div>

      <!-- Modal Body -->
      <div class="modal-body">
        <p class="body-message centered"><strong>Modal 1 here.</strong>
        </p>
      </div>

    </div>
    <!-- Modal Content: ends -->

  </div>

</div>

<!---------------------->
<div class="wrap">
  <h1>Bootstrap Modal Example</h1>
  <button type="button" class="btn btn-primary" data-toggle="modal" data-target=".modal2">
    Modal 2
  </button>
</div>

<div class="modal fade modal2" tabindex="-1" role="dialog" aria-labelledby="modal2" aria-hidden="true">

  <div class="modal-dialog modal-lg">

    <!-- Modal Content: begins -->
    <div class="modal-content">

      <!-- Modal Body -->
      <div class="modal-body">
        <div class="body-message">
          <h4>Modal 2 here.</h4>
          <p>How to change this background colour?</p>
        </div>
      </div>

    </div>
    <!-- Modal Content: ends -->

  </div>

</div>

<强>更新

Bootstrap模态的属性： -

打开模态时会触发
• shown.bs.modal
打开模态时会触发
• hidden.bs.modal

我正在做的是，每当你尝试打开一个bootstrap模型时，就会添加一个带有类模态背景的div，而我只是将该背景颜色改变为你喜欢的颜色。每当您尝试删除模型时，div都将被删除。所以你需要每次都管理它。根据你的要求，如果你有两个以上的模型，那么每个人的颜色应该是不同的（至少是我所解释的）。