React 折腾记 - (11) 结合Antd菜单控件(递归遍历组件)及常规优化

const RouterTree = [
  {
    key: 'g0',
    icon: 'dashboard',
    text: '数据分析',
    path: '/dashboard',
    children: [
      {
        key: '1',
        text: '数据概览',
        path: '/dashboard/monitor',
      },
      {
        key: '2',
        text: '日活月活',
        path: '/dashboard/dau',
      },
      {
        key: '3',
        text: '用户留存',
        path: '/dashboard/retentio

.... 此处省略N多重复规格的

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首次遍历树: 0.782958984375ms
第二次遍历树: 0.385009765625ms
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// 递归侧边栏
  sidebarTree = (RouterTree, callback) => {
    // 判断是否有效的数组,且长度大于0[再去递归才有意义]
    let isValidArr = value => value && Array.isArray(value);
    let isValidArrChild = value =>
      value && value.children && Array.isArray(value.children) && value.children.length > 0;
    function recursive(Arr) {
      if (isValidArr(Arr)) {
        return Arr.map(ArrItem => {
          if (isValidArrChild(ArrItem)) {
            return (
              <SubMenu
                key={ArrItem.key}
                title={
                  <div>
                    {ArrItem.icon ? <Icon type={ArrItem.icon} theme="outlined" /> : null}
                    <span>{ArrItem.text}</span>
                  </div>
                }
              >
                {recursive(ArrItem.children)}
              </SubMenu>
            );
          }
          return (
            <Item key={ArrItem.key} onClick={() => callback(ArrItem)}>
              {ArrItem.icon ? <Icon type={ArrItem.icon} theme="outlined" /> : null}
              <span>{ArrItem.text}</span>
            </Item>
          );
        });
      }
    }
    return recursive(RouterTree);
  };

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  // 路由跳转
  gotoUrl = item => {
    const { history, location } = this.props;
    this.setState({
      selectedKeys: [item.key],
    });
    if (location.pathname === item.path) {
      return;
    } else {
      history.push(item.path);
    }
  };

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// 我自己维护的静态路由
import RouterTree, { groupKey, findKey } from './RouterTree';

<Sider
    breakpoint="lg"
    collapsed={collapsed}
    width="160"
    style={{ backgroundColor: `${theme ? '#001529' : '#fff'}` }}
    onCollapse={this.toggleCollapsed}
    >
    <Logo collapsed={collapsed} mode={mode} theme={theme} />
    <Menu
      inlineIndent={12}
      subMenuOpenDelay={0.3}
      theme={theme ? 'dark' : 'light'}
      openKeys={openKeys}
      mode="inline"
      selectedKeys={selectedKeys}
      onOpenChange={this.onOpenChange}
    >
      {this.sidebarTree(RouterTree, this.gotoUrl)}
    </Menu>
    </Sider>

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