let test= [1,2,3,7,5,4,4,3]
console.log([...new Set(test)]) //[ 1, 2, 3, 7, 5, 4 ]
let test= [1,2,3,7,5,4,4,3]
console.log([...new Set(test)]) //[ 1, 2, 3, 7, 5, 4 ]
原文：https://www.cnblogs.com/ybleeho/p/8587490.html