abstract：<html><head><title>JS基础</title></head><body><script>var a = "I LOVE U";var b = 1314;document.write(a+b);console.log(typeof(a));console.log(typeof(b)
<html>
<head>
<title>JS基础</title>
</head>
<body>
<script>
var a = "I LOVE U";
var b = 1314;
document.write(a+b);
console.log(typeof(a));
console.log(typeof(b));
</script>
</body>
</html>
Correcting teacher：灭绝师太Correction time：2019-02-01 09:58:40
Teacher's summary：练习过于简单 变量的类型那么多,都要测试看看效果哦