JS 数组转集合（数组去重）
let Num=[1, 2, 3, 4, 5, 6, 1, 1, 1 ]
let Num1=new Set(Num);
console.log(Num);//[1, 2, 3, 4, 5, 6, 1, 1, 1 ]
Num = [...Num1];
console.log(Num);//[1,2,3,4,5,6]
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let Num=[1, 2, 3, 4, 5, 6, 1, 1, 1 ]
let Num1=new Set(Num);
console.log(Num);//[1, 2, 3, 4, 5, 6, 1, 1, 1 ]
Num = [...Num1];
console.log(Num);//[1,2,3,4,5,6]