I am new to React ans was learning Context API and during the use of it I faced this error TypeError: render is not a function. I also found the this answer React Context: TypeError: render is not a function in the platform which is close to my problem but no result. Here is the code I am using:
import React, { Component } from "react";
import MyContext from "../../Containers/Context/Context";
class Track extends Component {
render() {
return (
<MyContext>
{value => {
return <div>{value.heading}</div>;
}}
</MyContext>
);
}
}
export default Track;
import React, { Component } from "react";
const Context = React.createContext();
export class MyContext extends Component {
state = { track_list: [], heading: "Top Ten Tracks" };
render() {
return (
<Context.Provider value={this.state}>
{this.props.children}
</Context.Provider>
);
}
}
export default MyContext = Context.Consumer;
import React, { Component, Fragment } from "react";
import "./App.css";
import Header from "../src/Components/Header/Header";
import Search from "../src/Components/Search/Search";
import Tracks from "../src/Components/Tracks/Tracks";
import { BrowserRouter as Router, Route, Link, Switch } from "react-router-dom";
import NotFound from "./Components/NotFound/NotFound";
import MyContext from "./Containers/Context/Context";
class App extends Component {
render() {
return (
<MyContext>
<Router>
<Fragment>
<Header />
<div className="container">
<Search />
<Switch>
<Route exact path="/" component={Tracks} />
<Route component={NotFound} />
</Switch>
</div>
</Fragment>
</Router>
</MyContext>
);
}
}
export default App;
Your export and import statements are problematic.
first you export class MyContext
then you immediately overwrite MyContext
with Context.Consumer
.
Fix your export statements and then fix your imports. import the Context.Consumer
in file Track
, and import the Context.Provider
in file App
Containers/Context/Context.js
import React, { Component } from "react";
const Context = React.createContext();
class MyContextProvider extends Component {
state = { track_list: [], heading: "Top Ten Tracks" };
render() {
return (
<Context.Provider value={this.state}>
{this.props.children}
</Context.Provider>
);
}
}
const MyContextConsumer = Context.Consumer;
export {MyContextProvider,MyContextConsumer};
Track.js
import React, { Component } from "react";
import {MyContextConsumer} from "../../Containers/Context/Context";
class Track extends Component {
render() {
return (
<MyContextConsumer>
{value => {
return <div>{value.heading}</div>;
}}
</MyContextConsumer>
);
}
}
export default Track;
App.js
import React, { Component, Fragment } from "react";
import "./App.css";
import Header from "../src/Components/Header/Header";
import Search from "../src/Components/Search/Search";
import Tracks from "../src/Components/Tracks/Tracks";
import { BrowserRouter as Router, Route, Link, Switch } from "react-router-dom";
import NotFound from "./Components/NotFound/NotFound";
import {MyContextProvider} from "./Containers/Context/Context";
class App extends Component {
render() {
return (
<MyContextProvider>
<Router>
<Fragment>
<Header />
<div className="container">
<Search />
<Switch>
<Route exact path="/" component={Tracks} />
<Route component={NotFound} />
</Switch>
</div>
</Fragment>
</Router>
</MyContextProvider>
);
}
}
export default App;
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.