<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script >
var a=10;//全局变量
// function fun(){
// var b=20;
// console.log("a="+a);
// }
// fun();
// console.log("b="+b);
function fun2(){
var a="你好，我是fun2中的a";
console.log("a="+a);
}
fun2();
console.log("a="+a);
</script>
</head>
<body>
</body>
</html>
Processed:
0.009, SQL:
9
