<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body {
font-family: "Microsoft YaHei", serif;
}
body, dl, dd, p, h1, h2, h3, h4, h5, h6 {
margin: 0;
}
ol, ul, li {
margin: 0;
padding: 0;
list-style: none;
}
img {
border: none
}
</style>
</head>
<body>
<div id="wrap">
<p id="box">123</p>
</div>
<script>
var oWrap = document.getElementById("wrap");
var oBox = document.getElementById("box");
// 使用+=之后,wrap中的内容全部被重写
// oBox获取的内容不再是获取时的内容
// 需要重新获取oBox
oWrap.innerHTML += "<p>456</p>";
// oBox = document.getElementById("box");
oBox.innerText += 456;
</script>
</body>
</html>
Python3Turtle