<!DOCTYPE html>
<html>
<body>
<h1>JavaScript 赋值</h1>
<h2>简单赋值</h2>
<h3>= 运算符</h3>
<p id="demo"></p>
<script>
let x = 10;
document.getElementById("demo").innerHTML = "x 的值是：" + x;
</script>
</body>
</html>