this...的指向 菜鸡小磊子 2021-06-19 139 阅读1分钟 很多时候都会被 this 到底指向的谁很迷糊 ,列举 了一下 函数调用时 this 指向谁 1. fn() this => window 2. obj.fn() this => obj 3. fn.call(xxx) this => xxx 4. fn.apply(xxx) this => xxx 5. fn.bind(xxx) this => xxx 6. new Fn() this => 指向的是新的对象