- sort会修改原数组
const person = [{name:"Rom",age:12},{name:"Bob",age:22},{name:"Ma",age:5},{name:"Tony",age:25}] person.sort((a,b)=>{ return a.age-b.age})//升序 person.sort((a,b)=>{ return b.age-a.age})//降序
- 查看mdn文档 Array.prototype.sort https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array/sort
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