使用 CSS:target 和 Javascript

Question

不確定這是否可以完成，但我正在努力解決這個問題。 所以我有一個純 CSS 模態，它利用：target 開火。 但是，我想在觸發時使用 Javascript 在我的 Body 中添加/刪除 class ，這樣我就可以防止頁面滾動到模態后面。

[data-am-modal] {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  z-index: 999;
  width: 0;
  height: 0;
  opacity: 0;
}
[data-am-modal]:target {
  width: auto;
  height: auto;
  opacity: 1;
  -webkit-transition: opacity 400ms ease;
  transition: opacity 400ms ease;
}
[data-am-modal]:target .modal-overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  cursor: default;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 1;
}
[data-am-modal] .modal-dialog {
  position: relative;
  width: calc(100% - 30px);
  max-width: 600px;
  margin: 15px auto;
  z-index: 2;
}
[data-am-modal] .modal-content {
  background-color: white;
  padding: 30px;
}
[data-am-modal] .modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
}

/* Base Styling */
body {
  margin: 0;
  font-family: 'Open Sans', sans-serif;
}

.link {
  display: inline-block;
  padding: 15px;
  background-color: #1e91c7;
  color: #fff;
  border-radius: 5px;
  text-decoration: none;
}

<a href="#modal-1" class="link">Open Modal</a>

<p>
filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>
</p>


<div data-am-modal id="modal-1">
    <a href="#!" class="modal-overlay"></a>
    <div class="modal-dialog">
        <div class="modal-content">
            <a href="#!" class="modal-close">Close</a>
            <h1>CSS Modal</h1>
            <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>
</div>

https://jsfiddle.net/gpjcauye/6/

Answer 1

您可以收聽hashchange事件：

 window.addEventListener('hashchange', (evt) => document.body.classList.toggle('modal-on', location.hash === "#modal-1") );

 .modal-on { color: green; } [data-am-modal] { position: fixed; top: 0; bottom: 0; left: 0; right: 0; overflow-x: hidden; overflow-y: auto; -webkit-overflow-scrolling: touch; z-index: 999; width: 0; height: 0; opacity: 0; } [data-am-modal]:target { width: auto; height: auto; opacity: 1; -webkit-transition: opacity 400ms ease; transition: opacity 400ms ease; } [data-am-modal]:target.modal-overlay { position: fixed; top: 0; bottom: 0; left: 0; right: 0; cursor: default; background-color: rgba(0, 0, 0, 0.4); z-index: 1; } [data-am-modal].modal-dialog { position: relative; width: calc(100% - 30px); max-width: 600px; margin: 15px auto; z-index: 2; } [data-am-modal].modal-content { background-color: white; padding: 30px; } [data-am-modal].modal-close { position: absolute; top: 15px; right: 15px; } /* Base Styling */ body { margin: 0; font-family: 'Open Sans', sans-serif; }.link { display: inline-block; padding: 15px; background-color: #1e91c7; color: #fff; border-radius: 5px; text-decoration: none; }

 <a href="#modal-1" class="link">Open Modal</a> <p> filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br>filler text<br> </p> <div data-am-modal id="modal-1"> <a href="#." class="modal-overlay"></a> <div class="modal-dialog"> <div class="modal-content"> <a href="#," class="modal-close">Close</a> <h1>CSS Modal</h1> <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> </div>