如何在Javascript[duplicate]中获得可变长度数组的前3个元素

你可以用 Array#slice

return this.users.sort(this.triDec).slice(0, 3);

var diffSplice = 3;
return this.users.sort(this.triDec).slice(0,diffSplice)

let arr = [1, 2, 3, 4, 5];
console.log(arr.slice(0, 3));

提到 Array Silce

填写拼接的deletecount:

var sortedArray = this.users.sort(this.triDec);
return sortedArray.splice(0, 3);

检查 MDN