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HarmonyOS/鸿蒙.learn/蜗牛学苑/day03.md

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this指向问题

  1. this永远指向一个对象
  2. 普通函数中this，谁调用此函数。则this指向谁
  3. 箭头函数默认没有this指向，如果出现，则一定指向父级作用域

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