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[JavaScript] 请教两个数组对比的问题

发表于
const arr1=[a,b,c,d,e,f]
const arr2=[d,b,c,a,g,h]

需求是:arr2 中的元素如果不在 arr1 中就删除,arr1 中的元素如果不在 arr2 中就要 push 进 arr2 ( arr2 中元素的前后顺序不能变)。 目前想到的就是各遍历一次 arr1 和 arr2 ,有什么更好的方法吗? 谢谢。

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