js如何去掉两个数组重复的值？
a = [1,2,3,4,5]
b = [3,4,5]
a只保留[1,2]
答:
a = [1, 2, 3, 4, 5];
b = [3, 4, 5];
a = a.filter(item => …
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a = [1,2,3,4,5]
b = [3,4,5]
a只保留[1,2]
答:
a = [1, 2, 3, 4, 5];
b = [3, 4, 5];
a = a.filter(item => …
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