3
有沒有辦法繼承:主機元素CSS樣式到陰影DOM? 原因是,如果我們開始開發Web組件,每個Web組件風格必須在頁面上保持一致。影子DOM全局css繼承可能嗎?
該頁面可以具有全局css,並且此全局css樣式可以繼承到shadow DOM。有::shadow
和/deep/
,但現在不推薦使用。
或者,這是否對模式?如果是這樣,爲什麼?
我發現這個問題,但似乎過時了。 Can Shadow DOM elements inherit CSS?
http://plnkr.co/edit/qNSlM0?p=preview
const el = document.querySelector('my-element');
el.attachShadow({mode: 'open'}).innerHTML = `
<!-- SEE THIS 'red' is not red -->
<p class="red">This is defined in Shadow DOM. I want this red with class="red"</p>
<slot></slot>
`;
.red {
padding: 10px;
background: red;
font-size: 25px;
text-transform: uppercase;
color: white;
}
<!DOCTYPE html>
<html>
<head>
<!-- web components polyfills -->
<script src="//unpkg.com/@webcomponents/custom-elements"></script>
<script src="//unpkg.com/@webcomponents/webcomponentsjs"></script>
<script src="//unpkg.com/@webcomponents/shadydom"></script>
<script src="//unpkg.com/@webcomponents/[email protected]/apply-shim.min.js"></script>
</head>
<body>
<div>
<p class="red">I'm outside the element (big/white)</p>
<my-element>
<p class="red">Light DOM content is also affected.</p>
</my-element>
<p class="red">I'm outside the element (big/white)</p>
</div>
</body>
</html>
你有沒有考慮過使用CSS Variables和mixins呢?如果您公開它們,它們將允許您覆蓋或配置組件 –