对于这两种用法，一直搞不懂有什么区别。小白一枚，请各位高手指教。谢谢！
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拜谢！
https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Functions/Arrow_functions
抱歉，完全不懂，还以为是小程序特有的，所以发到这里了。
继续请教：“内部不绑定this"是什么意思啊？是可以省略this的意思吗？
es6箭头函数，函数内部不绑定this，写起来方便直观。 另外这种问题应该用搜索引擎解决。