const arr1 = [ { x: 0, y: 0, key: "0" },

{ x: 0, y: 0, key: "1" }, { x: 0, y: 0, key: "1" },

{ x: 1, y: 1, key: "2" }, { x: 1, y: 2, key: "3" },

{ x: 2, y: 1, key: "4" }];

const arr2 = [ { x: 0, y: 0, key: "0" },

{ x: 0, y: 0, key: "1" },

{ x: 0, y: 0, key: "2" },

{ x: 0, y: 0, key: "3" },

{ x: 0, y: 0, key: "4" },

{ x: 0, y: 0, key: "5" },

{ x: 0, y: 0, key: "6" },

{ x: 0, y: 0, key: "7" },

{ x: 0, y: 0, key: "8" },

{ x: 0, y: 0, key: "9" },

{ x: 1, y: 1, key: "10" },

{ x: 1, y: 2, key: "11" },

{ x: 2, y: 1, key: "12" }];

//解决超过10数据后排序异常问题

1.增加第三个参数的判断。

(compare === 1时 a.x > b.x || (a.x === b.x && a.y > b.y)|| (a.x === b.x&& a.key > b.key && a.y === b.y))（compare === 0时 a.x === b.x && a.y === b.y&& a.key === b.key）)

//2.可以按照 compare === 0 的时候 直接返回 a.key - b.keyconst compare = (a, b) => { if (a.x > b.x || (a.x === b.x && a.y > b.y)|| (a.x === b.x && a.key > b.key && a.y === b.y)) { console.log("1a.x:" a.x " ,b.x:" b.x); console.log("1a.y:" a.y " ,b.y:" b.y); return 1;//第一个参数比第二个大 } if (a.x === b.x && a.y === b.y && a.key === b.key) { console.log("0a.x:" a.x " ,b.x:" b.x); console.log("0a.y:" a.y " ,b.y:" b.y); return 0;//两个参数相等 } console.log("-1a.x:" a.x " ,b.x:" b.x);

console.log("-1a.y:" a.y " ,b.y:" b.y);

return -1;//第一个参数比第二个小};

const sort = arr => { return [...arr].sort(compare);};

console.log(sort(arr1));

console.log(sort(arr2));