<!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"></div>
<script>
// NaN六亲不认
var a = NaN;
var b = NaN;
console.log(a === b);
var c = NaN;
var d = c;
console.log(c === d);
// 简单数据类型指向堆内存的地址
// 比较的是复杂数据类型的地址
var e = {name:"qwq"};
var f = {name:"qwq"};
console.log(e === f);
var h = {name:"qwq"};
var i = h;
console.log(h === i);
</script>
</body>
</html>
Python3Turtle