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Created November 1, 2021 03:26
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A web component as a module
Raw
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Web components as ES Modules</title>
<link rel="preload" href="page-title.mjs" as="script" crossorigin="anonymous">
</head>
<body>
<page-title></page-title>
<script src="page-title.mjs" type="module"></script>
</body>
</html>
Raw
page-title.mjs
export default class PageTitle extends HTMLElement {
constructor () {
super()
this.attachShadow({ mode: 'open' })
this.shadowRoot.innerHTML = /* html */ `
<style>
:host {
display: inline-block;
font-family: sans-serif;
}
p {
text-decoration: underline;
font-weight: bold;
}
</style>
<p>${document.title}</p>
`
}
}
customElements.define('page-title', PageTitle)
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