<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
</body>
<script>
name='randomlee';
function func() {
var name='lee';
function inner() {
console.log(name);
}
var name='random';
return inner;
}
var ret =func();
ret();
console.log(name)
</script>
</html>
js的作用域作用在函数体内且在函数执行之前作用域就已经生成