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webComponent.html
53 lines (53 loc) · 1.24 KB
/
webComponent.html
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<!DOCTYPE html>
<html>
<body>
<!--
⼀：定义模板
⼆：定义内部CSS样式
三：定义JavaScript⾏为
-->
<template id="geekbang-t">
<style>
p {
background-color: brown;
color: cornsilk;
}
div {
width: 200px;
background-color: bisque;
border: 3px solid chocolate;
border-radius: 10px;
}
</style>
<div>
<p>time.geekbang.org</p>
<p>time1.geekbang.org</p>
</div>
<script>
function foo() {
console.log("inner log");
}
</script>
</template>
<script>
class GeekBang extends HTMLElement {
constructor() {
super();
//获取组件模板
const content = document.querySelector("#geekbang-t").content;
//创建影⼦DOM节点
const shadowDOM = this.attachShadow({ mode: "open" });
//将模板添加到影⼦DOM上
shadowDOM.appendChild(content.cloneNode(true));
}
}
customElements.define("geek-bang", GeekBang);
</script>
<geek-bang></geek-bang>
<div>
<p>time.geekbang.org</p>
<p>time1.geekbang.org</p>
</div>
<geek-bang></geek-bang>
</body>
</html>