摘要：<!DOCTYPE html><html><head><meta charset="UTF-8"><title>第一个js程序</title></head><body><script type="text/javascript">document.wr
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>第一个js程序</title>
</head>
<body>
<script type="text/javascript">
document.write('第一个js程序');
var x = 5, y = 3;
console.log(x-y);
console.log(x+y);
var name = '张三';
console.log(name);
console.log(typeof(x));
console.log(typeof(y));
console.log(typeof(name));
var bol = true;
console.log(bol);
console.log(typeof(bol));
</script>
</body>
</html>
批改老师：天蓬老师批改时间：2019-01-14 09:58:10
老师总结：var x = 5, y = 3; 这样写没错,但是推荐一行只写一个变量定义, 方便写注释
