重新加载页面是在 vue 组件中的插槽上闪烁内容

Question

有什么方法可以避免页面刷新时的这种闪烁，它是一个 modal 组件，它将 HTML 作为 slot，但是当我刷新页面时它会闪烁。我的应用程序没有使用路由器，因此它不是完整的 SPA。

查看 gif。

这是代码。

.body {
   padding: 2em;
   text-align: center;
   display: table-cell;
     vertical-align: middle;
  }

  .modal-mask {
    position: absolute;
    z-index: 9998;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, .5);
    display: table;
    transition: opacity .3s ease;
  }

  .modal-wrapper {
    display: table-cell;
    vertical-align: middle;
  }

  .modal-container {
    width: 70%;
    margin: 1em auto;
    padding: 20px 30px;
    background-color: #fff;
    border-radius: 2px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .33);
    transition: all .3s ease;
    font-family: Helvetica, Arial, sans-serif;
  }

  .modal-header h3 {
    margin-top: 0;
    color: #42b983;
  }

  .modal-body {
    margin: 20px 0;
  }

  .modal-default-button {
    float: right;
  }


  /*
   * The following styles are auto-applied to elements with
   * transition="modal" when their visibility is toggled
   * by Vue.js.
   *
   * You can easily play with the modal transition by editing
   * these styles.
   */

  .modal-enter {
    opacity: 0;
  }

  .modal-leave-active {
    opacity: 0;
  }

  .modal-enter .modal-container,
  .modal-leave-active .modal-container {
    -webkit-transform: scale(1.1);
    transform: scale(1.1);
  }

<!-- template for the modal component -->
<script type="text/x-template" id="modal-template">
  <transition name="modal">
    <div class="modal-mask">
      <div class="modal-wrapper">
        <div class="modal-container">

          <div class="modal-header">
            <slot name="header">
              default header
            </slot>
            <button class="modal-default-button" @click="$emit('close')">Close</button>
          </div>

          <div class="modal-body">
            <slot name="body">
              default body
            </slot>
          </div>

          <div class="modal-footer">
            <slot name="footer">
              default footer
              <button class="modal-default-button" @click="$emit('close')">
                OK
              </button>
            </slot>
          </div>
        </div>
      </div>
    </div>
  </transition>
</script>

<!-- app -->
<div id="app">
  <button id="show-modal" @click="showModal = true">Show Modal</button>
  <!-- use the modal component, pass in the prop -->
  <modal v-if="showModal" @close="showModal = false">
    <!--
      you can use custom content here to overwrite
      default content
    -->
    <div slot="body">
      <div class="modal-body">
        <h4>Text in a modal</h4>
        <p>Duis mollis, est non commodo luctus, nisi erat porttitor ligula.</p>
        <h4>Popover in a modal</h4>
        <p>This <a href="#" class="btn btn-default popover-test" role="button" title="" data-content="And here's some amazing content. It's very engaging. right?" data-original-title="A Title">button</a> should trigger a popover on click.</p>
        <h4>Tooltips in a modal</h4>
        <p><a href="#" class="tooltip-test" title="" data-original-title="Tooltip">This link</a> and <a href="#" class="tooltip-test" title="" data-original-title="Tooltip">that link</a> should have tooltips on hover.</p>
        <hr>
        <h4>Overflowing text to show scroll behavior</h4>
        <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
        <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
        <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
        <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
        <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
        <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
        <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
        <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
        <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
      </div>
    </div>
    <h3 slot="header">custom header</h3>
  </modal>
</div>

<script src="https://unpkg.com/vue@latest/dist/vue.js"></script>

<script>
 // register modal component
 Vue.component('modal', {
   template: '#modal-template'
 })

 // start app
 new Vue({
   el: '#app',
   data: {
     showModal: false
   }
 })
</script>

Answer 1

这通常是因为您的 vue.js 需要加载直到它能够执行您想要的操作。

您基本上加载了默认可见的 html 内容。

在 html 加载 vue 之后，由于 v-if 或 v-show 语句，vue 将隐藏您的内容。确保不会发生这种情况的最简单方法是使用 v-cloak 指令加上一点 css.

如本例所示将其置于非常高的级别

<div id="app"><!-- vue mounted at this div -->
    <div v-cloak>

        <!-- your actual code / content -->

    </div>
</div>

和css

[v-cloak] { display: none; }

一旦 vue 完成加载，v-cloak 属性将被删除。因此，在 vue 完成加载之前，所有内容都是隐藏的。这应该确保您的内容不会闪烁。

重新加载页面是在 vue 组件中的插槽上闪烁内容

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