javascript - 是否有可能在shadow dom中使用twitter bootstrap的css类？

Question

是否有可能在shadow dom中使用twitter bootstrap？此时，一个主要优势就变成了劣势。

Answer 1

只需在 Shadow DOM 中插入带有 <link href="stylesheet"> 的 Bootstrap CSS 文件即可元素:

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">

customElements.define( 'c-e', class extends HTMLElement {
  constructor() {
    super()
    this.attachShadow( { mode: 'open' } )
        .innerHTML = `
          <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
          <button class="btn btn-primary">Hello</button>
        `
  }
} )

<c-e></c-e>