让我函数隐式使用user对象

var user = { name: 'John', age: 25 };

function someFunction() {
  console.log(user.name); // 隐式访问user对象
}

someFunction(); // 输出：John

function outerFunction() {
  var user = { name: 'John', age: 25 };

  function innerFunction() {
    console.log(user.name); // 隐式访问user对象
  }

  innerFunction();
}

outerFunction(); // 输出：John

var user = {
  name: 'John',
  age: 25,
  sayHello: function() {
    console.log(this.name); // 隐式访问user对象
  }
};

user.sayHello(); // 输出：John