<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title></title>
</head>
<body>
<script>
let abc = "这个是let";
const AB = "这是常量";
var a = "wulei";
var b = "吃饭";
var c = "睡觉";
console.log(a + '正在' + b + '然后' + c);
//模板字符串
console.log(`${a}正在${b}然后${c}`);
// 特殊字符的输出。 ` /
console.log(`\\'`);
//换行的输出。
console.log(`h111
h222`);
</script>
</body>
</html>