[我需要帮助,我之前对此发布了一个问题,但我认为我犯了一些错误并使之混乱,我每次都会收到“未定义文档”错误,请问有什么方法可以解决此问题?
console.log("Testing");
const p = document.createElement("p")
p.innerHTML = "This is to test the javascript extension";
const body = document.querySelector("body");
body.insertBefore(p,body.childNode[-1]);
<!DOCTYPE html>
<html>
<head>
<title>Testing vs code</title>
<link rel="stylesheet" type="text/css" href="styles.css"/>
</head>
<body>
<h1>Testing the vscode html preview package</h1>
<h2>Hello</h2>
<script type="module" src="js-prac.js"></script>
</body>
尝试一下: