What are the distinctions between employing `children` components as opposed to utilizing the `render` function in React Router?

I've been delving into React Router and I'm a bit puzzled about the distinction between utilizing children elements within the <Route> component (not to be confused with the children func which seems to serve a different purpose) versus using the render prop with an inline function.

In essence, what sets apart this piece of code:

<Switch>
  <Route exact path="/">
    <Home />
  </Route>
  <Route path="/about">
    <About />
  </Route>
  <Route path="/dashboard">
    <Dashboard />
  </Route>
</Switch>

from

<Switch>
  <Route exact path="/" render={() => <Home />} />
  <Route path="/about" render={() => <About />} />
  <Route path="/dashboard" render={() => <Dashboard />} />
</Switch>

both codes seem to achieve the same result

Which approach should I opt for? What are the actual distinctions in behavior and performance? A comprehensive explanation would be greatly appreciated. This is mainly a matter of intrigue for me right now. The use of children elements is currently working well in my project.

Answer №1

If you're looking to render a component within a route using react-router, there are several options available, detailed in the link provided.

https://reactrouter.com/web/api/Route/route-render-methods

The crux of the matter, as outlined in the documentation, can be summed up in the "render: func" section.

This feature allows for easy inline rendering and wrapping without encountering unwanted remounting issues.

Why is this considered the pivotal point? Well, if you carefully read through each section pertaining to these render methods, utilizing an inline function (through 'render' or 'children') is primarily to avoid using the 'component' prop (perhaps to sidestep creating a separate file, or for other valid reasons).

This perspective is further emphasized in the code example under "render: func," where you will come across the following snippet.

<Route
  {...rest}
  render={routeProps => (
    <FadeIn>
      <Component {...routeProps} />
    </FadeIn>
  )}
/>

By utilizing the render property in such instances, you eliminate the need to create an additional file solely for encapsulating the component with 'FadeIn'.

Therefore, if you have a rationale akin to this, employing the 'render' property makes sense; otherwise, stick to using the 'component' property.

It's worth noting that the 'component' property automatically passes down the route properties, as per the documentation.

A React component that renders only when the location matches, incorporating route props.

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