<!DOCTYPE html>
<html>
<body>
<h1>JavaScript 布尔</h1>
<p>toString() 方法将布尔值转换为字符串：</p>
<p id="demo"></p>
<script>
let bool = true;
let x = bool.toString();
document.getElementById("demo").innerHTML = typeof x;
</script>
</body>
</html>