javascript - 递归访问对象中对象的键/值对并将它们组合成一个平面数组

Question

我有一个包含我所有路线的对象数组。我需要访问所有对象的嵌套子属性及其属性并将它们组合在一起。

我的对象数组看起来类似于：

const routes = [
  {
    path: '/system-settings1',
    name: 'global-settings1',
    component: 'tabs1',
    children: [
      {
        path: 'level2-accounting1',
        name: 'local-settings1',
        components: 'modals1',
        children: [
          {
            path: 'level3-accounting1',
            name: 'local-settings1',
            components: 'modals1'
          }
          // more children deeply nested(or not)
        ]
      },
      {
        path: 'level2-accounting1',
        name: 'local-settings1',
        components: 'modals1',
        children: [
          {
            path: 'level3-accounting1',
            name: 'local-settings1',
            components: 'modals1'
          }
          // more children deeply nested(or not)
        ]
      }
    ],
  },
  {
    path: '/system-settings2',
    name: 'global-settings2',
    component: 'tabs2',
    children: [
      {
        path: 'level2-accounting2',
        name: 'local-settings2',
        components: 'modals2',
        children: [
          {
            path: 'level3-accounting2',
            name: 'local-settings2',
            components: 'modals2'
          }
          // more children deeply nested(or not)
        ]
      },
      {
        path: 'level3-accounting2',
        name: 'local-settings2',
        components: 'modals2',
        children: [
          {
            path: 'level4-accounting2',
            name: 'local-settings2',
            components: 'modals2'
          }
          // more children deeply nested(or not)
        ],
      }
    ],
  },
  // more objects with similar key/value pairs
];

我需要将对象数组变成单级数组，如下所示：

[
  {
    path: '/system-settings1',
    name: 'global-settings1',
    component: 'tabs1',
  },
  {
    path: 'level2-accounting2',
    name: 'local-settings2',
    components: 'modals2',
  },
  {
    path: 'level3-accounting1',
    name: 'local-settings1',
    components: 'modals1'
  },
  {
    path: 'level2-accounting1',
    name: 'local-settings1',
    components: 'modals1',
  }
  // so on if there is more objects etc
]

我曾尝试.map()与循环.filter()结合while，但老实说，我缺乏自己完成的技能，不值得包括我的尝试。如果有人可以帮助我并解释这将不胜感激。

标签： javascriptarraysobjectrecursionnested-routes

Answer 1

我尝试编辑您的代码示例，以使它们有意义并且运行时没有错误。routes这是一个在根数组以及任何嵌套数组上调用的递归函数children：

const flatten = routes => {
  const flattened = [];

  for (let i = 0; i < routes.length; i++) {
    const route = routes[i];

    //for each route, grab only the information about the route itself (no children)
    const { path, name, components } = route;
    const flatRoute = { path, name, components };

    //add the new route object to our return array
    flattened.push(flatRoute);

    //if the route had children, recursively call flatten on them
    //and add each child to our return array
    if (route.children) {
      const flatChildren = flatten(route.children);
      flattened.push(...flatChildren);
    }
  }

  return flattened;
};