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this那篇习题答案有误 #1061

@xiaowangge666

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@xiaowangge666
   在this那篇教程上说下方代码是会报错 因为this是undefined 但是实际不会

function makeUser() {
return {
name: "John",
ref: this
};
}

    let user = makeUser();

    alert(user.ref.age);

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