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请教个javascript里跟闭包有关的问题

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请教个javascript里跟闭包有关的问题

请教一个问题， 这个js的代码里面， 我改变 dimensions的值，在第一个函数中可以看到dimensions值的改变，但是到第二个函数中这个值就不变了，还是之前的值，这个问题怎么解决？

谢谢！
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by (71.8m points)

亲，我觉得这个是()=>箭头函数的this导致的，你可以把箭头函数换成function试试


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