let intersection = a.filter(v => b.includes(v)) 返回交集数组
let difference = a.concat(b).filter(v => !a.includes(v) || !b.includes(v)) 返回相差元素数组
JavaScript查找两个数组的相同元素和相差元素
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转载自www.cnblogs.com/JsonGoIt/p/11768269.html
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