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13 lines
339 B
13 lines
339 B
3 years ago
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/**
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* @description: 数组差集
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* @param {Array} arr1
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* @param {Array} arr2
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* @return {Array}
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* @example: arrayDifference([1,2,3],[2,3]) //[1]
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*/
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export default function arrayDifference(arr1 = [], arr2 = []) {
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const set1 = new Set(arr1);
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const set2 = new Set(arr2);
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return [...new Set([...set1].filter(x => !set2.has(x)))];
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}
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