in learning react,redux and other knowledge, I wrote a simple 404 page, as follows
NonExistent.js
import React from "react";
function NonExistent(props) {
return (
<div>
error
</div>
)
}
export default NonExistentRoute was used in the call
App.js
import { Route, Link, withRouter, Switch, Redirect } from "react-router-dom";
...
<Switch>
...
<Route exact path={/error} component={NonExistent} />
...
</Switch>this makes it possible to display the page normally when you cut to the / error path.
then I heard about the use of React.Fragment, so I changed the page to
NonExistent.js
import React from "react";
function NonExistent(props) {
return (
<React.Fragment>
error
</React.Fragment>
)
}
export default NonExistenterror was reported when cutting to / error path
React.createElement: type is invalid-- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it"s defined in.
is it possible that this syntax cannot be used in combination with Route?
or did I write something wrong?
it was this mistake that I used both google and Firefox. Ask for advice.