Question

考虑以下场景，我必须按名称和分数对学生列表进行排序。

[
 {
  name: 'Max',
  score: 94
 },
 {
  name: 'Jerome',
  score: 86
 },
 {
  name: 'Susan',
  score: 86
 },
 {
  name: 'Abel',
  score: 86
 },
 {
  name: 'Kevin',
  score: 86
 }
]

我想由得分最高的学生对列表进行排序，但如果两个或更多学生的得分相同，那么我想按字母顺序对这些学生进行排序。对于上述情况，结果应如下所示：

[
 {
  name: 'Max',
  score: 94
 },
 {
  name: 'Abel',
  score: 86
 },
 {
  name: 'Jerome',
  score: 86
 },
 {
  name: 'Kevin',
  score: 86
 },
 {
  name: 'Susan',
  score: 86
 }
]

我怎样才能做到这一点？我可以使用任何lodash函数，还是纯JavaScript可以使用？

Answer 1

不需要库，只需比较score，如果结果为0，则比较名称：

const arr=[{name:'Max',score:94},{name:'Jerome',score:86},{name:'Susan',score:86},{name:'Abel',score:86},{name:'Kevin',score:86}]

console.log(
  arr.sort((a, b) => b.score - a.score || a.name.localeCompare(b.name))
);

Answer 2

尝试以下方法：

var arr = [
 {
  name: 'Max',
  score: 94
 },
 {
  name: 'Jerome',
  score: 86
 },
 {
  name: 'Susan',
  score: 86
 },
 {
  name: 'Abel',
  score: 86
 },
 {
  name: 'Kevin',
  score: 86
 }
];
arr.sort((a,b)=>{
 return (b.score - a.score) || a.name.localeCompare(b.name);
});
console.log(arr);

Answer 3

您可以按_.sortBy排序，并为订单列出属性和其他属性。

var array = [{ name: 'Max', score: 94 }, { name: 'Jerome', score: 86 }, { name: 'Susan', score: 86 }, { name: 'Abel', score: 86 }, { name: 'Kevin', score: 86 }];

console.log(_.sortBy(array, ['score', 'name'], ['desc', 'asc']))

.as-console-wrapper { max-height: 100% !important; top: 0; }

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.15.0/lodash.min.js"></script>

Answer 4

首先按分数对数组进行排序，如果两个分数相等，则按名称对其进行排序。请考虑以下代码：

＆＃13;

let obj = [
 {
  name: 'Max',
  score: 94
 },
 {
  name: 'Jerome',
  score: 86
 },
 {
  name: 'Susan',
  score: 86
 },
 {
  name: 'Abel',
  score: 86
 },
 {
  name: 'Kevin',
  score: 86
 }
];

obj.sort((a,b) => {
  if(b.score - a.score === 0){
    if(a.name < b.name) return -1;
    if(a.name > b.name) return 1;
    return 0;
  }
  else{
     return b.score - a.score;
  }
});

console.log(obj);

＆＃13;

有条件地按两个属性排序

4 个答案: