<!--@description-->
<!--@author beyondx-->
<!--@date Created in 2022/07/31/ 8:03-->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script>
// this运行在 哪个对象下, this 就指向 哪个对象
var o1 = {
age: 18,
fun: function() {
console.log(this.age);
}
}
var o2 = {
age: 16,
fun: o1.fun
}
o2.fun(); // expected 16
</script>
</body>
</html>