一、效果图
1.1 父级
1.2 父级与子级
二、代码
升序降序，只要把 a.num - b.num 改成 b.num - a.num
<html lang="en"><head><meta charset="UTF-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>Document</title></head><body><script>const arr = [{name: 1,num: 3,children: [{ name: 11, num: 1, children: [] },{ name: 12, num: 0, children: [] },],},{name: 2,num: 1,children: [{ name: 21, num: 3, children: [] },{ name: 22, num: 1, children: [] },],},{name: 3,num: 2,children: [{ name: 31, num: 1, children: [] },{ name: 32, num: 3, children: [] },],},];console.error(111, arr);function sortOrderMenu(arr) {const res = [];arr.sort((a, b) => a.num - b.num).forEach((val) => {if (val.children && val.children.length > 0)val.children = sortOrderMenu(val.children);res.push(val);});return res;}const newArr = sortOrderMenu(JSON.parse(JSON.stringify(arr)));console.error(222, newArr);</script></body>
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