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记一次面试题
2019-02-19 16:48不是这些小问题,建议了解下 es6,很多地方几行代码就能搞定
function getUnUsedKeys(allKeys, usedKeys) { //TODO let all = new Set(Array.from(new Array(allKeys)).map((v, k) => k)) let used = new Set(usedKeys) let difference = new Set([...all].filter(x => !used.has(x))); return Array.from(difference) }