react router

路由配置

import { createBrowserRouter, RouterProvider } from "react-router-dom";

const router = createBrowserRouter([
  {
    path: "/",
    element: <Home />,
  },
  {
    path: "contact",
    element: <ContactRoot />,
    errorElement: <ErrorPage />,
    children: [
      { index: true, element: <ContactHome /> },
      {
        path: ":contactId",
        element: <Contact />,
      },
      {
        path: ":contactId/edit",
        element: <EditContact />,
        action: editAction,
      },
    ],
  },
]);

<RouterProvider router={router} />;

error page component

{
    errorElement: <ErrorPage />,
}

index route

{ index: true, element: <ContactHome /> }

Note the{ index:true } instead of{ path: "" }

pathless routes

createBrowserRouter([
  {
    path: "/",
    element: <Root />,
    loader: rootLoader,
    action: rootAction,
    errorElement: <ErrorPage />,
    children: [
      {
        errorElement: <ErrorPage />,
        children: [
          { index: true, element: <Index /> },
          {
            path: "contacts/:contactId",
            element: <Contact />,
            loader: contactLoader,
            action: contactAction,
          },
          /* the rest of the routes */
        ],
      },
    ],
  },
]);

lazy

https://reactrouter.com/en/main/route/lazy

路由出口

import { Outlet } from "react-router-dom";

<Outlet />;

路由跳转

useNavigate

import { Link, NavLink } from "react-router-dom";

<Link to="/contacts/foo">link</Link>

<NavLink to="/contacts/foo" className={({ isActive, isPending }) => (isActive ? "active" : isPending ? "pending" : "")}>
	navlink
</NavLink>

import { useNavigate } from "react-router-dom";

const navigate = useNavigate();

navigate("/foo");
navigate(-1);

action

import { redirect } from "react-router-dom";

export async function action() {
  return redirect("/foo");
}

路由状态

import { useNavigation } from "react-router-dom";

const navigation = useNavigation();

navigation.state === "loading" ? "loading" : "";
navigation.location;

navigation: "idle" | "submitting" | "loading"

路由参数

params(URL Params)

/contracts/1234

:contactId

      {
        path: "contacts/:contactId",
        element: <Contact />,
      },

import { useParams } from "react-router-dom";

const { contactId } = useParams();

loader

import { useLoaderData } from "react-router-dom";

const contact = useLoaderData();

export async function loader({ params }) {
  return getContact(params.contactId);
}

URLSearchParams

/contracts?name=foo

import { useSearchParams } from "react-router-dom";

let [searchParams, setSearchParams] = useSearchParams();

路由守卫

https://reactrouter.com/en/main/start/tutorial