如何对每行具有3个值的数组进行排序？

Question

这是我必须从最高平均成绩到最低平均成绩排序的数组。let students= [         {name:"Petar", year:1, average:4.35},         {name:"Ivana", year:1, average:3.88},         {name:"Marko", year:2, average:2.27},         {name:"Davor", year:2, average:4.15},         {name:"Petra", year:3, average:3.99},         {name:"Ivan", year:3, average:4.33},         {name:"Goran", year:3, average:3.74}     ];students.sort(function(a,b){         return a[1] - b[1];     });

Answer 1

参数a和binsort函数是对象，而不是数组。使用dot访问的对象，而不是括号的财产。

let students= [

    {name:"Petar", year:1, average:4.35},

    {name:"Ivana", year:1, average:3.88},

    {name:"Marko", year:2, average:2.27},

    {name:"Davor", year:2, average:4.15},

    {name:"Petra", year:3, average:3.99},

    {name:"Ivan", year:3, average:4.33},

    {name:"Goran", year:3, average:3.74}

];

const output = students.sort((a, b) => b.average - a.average);

console.log(output);