正则来提取
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum=1.0,minimum=1.0,user-scalable=0" />
<title>BFW NEW PAGE</title>
<link type="text/css" rel="stylesheet" href="//repo.bfw.wiki/bfwrepo/css/bootstrap.4.3.1.min.css">
<script id="bfwone" data="dep=jquery.17&err=0" type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/bfwone.js"></script>
<style>
body{
color: white;
}
</style>
</head>
<body>
<div id="picker">
颜色选择器
</div>
<script type="text/javascript">
let html = document.documentElement.outerHTML;
// 创建一个虚拟的HTML元素
// 获取body内容
var matches = html.match(/<body[^>]*>([\s\S]*?)<\/body>/i);
var body = matches ? matches[1] : '';
// 提取script代码
var script = html.match(/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi);
// 提取link代码
var link = html.match(/<link[^>]+>/gi);
console.log(body);
console.log(script);
console.log(link);
const reg = /<style>([\s\S]*)<\/style>/i;
const result = reg.exec(html);
if(result){
const css = result[1];
console.log(css);
}
</script>
</body>
</html>
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