JavaScript 对象数组转换为嵌套对象 - 使用 parentId 属性

let nestedObj = {};

function findChildren(id) { let children = []; for(let i=0; i<arr.length; i++) { if(arr[i].parentId === id) { let child = { id: arr[i].id, name: arr[i].name }; let nestedChildren = findChildren(arr[i].id); if(nestedChildren.length > 0) { child.children = nestedChildren; } children.push(child); } } return children; }

for(let i=0; i<arr.length; i++) { if(arr[i].parentId === null) { nestedObj.id = arr[i].id; nestedObj.name = arr[i].name; let children = findChildren(arr[i].id); if(children.length > 0) { nestedObj.children = children; } } }

console.log(nestedObj);