how to make api calls in reactjs new hook api and share that across components?

user_9144896 0
Viewed 1240

How to call a restApi in the new reactjs hook api. And reusing the data using useEffects and useState ? I want to just reuse the data across components.

import { useState, useEffect } from "react";
export default function getAdvice(url) {
    fetch(`http://api.adviceslip.com/advice`)
        .then(res => res.json())
        .then(res => console.log(res))
        .catch(err => console.log(err)
}
react-hooks reactjs javascript
1 Answers

You can create a custom hook that creates a new piece of state advice that you set when your network request has finished.

Return a function from the function given to useEffect that cancels your request when the component that uses it re-renders or the component is unmounted. You can also give your url in an array as the second argument to useEffect to only re-run the network request when the url actually changes.

Example

const { useState, useEffect } = React;

function useAdvice(url) {
  const [advice, setAdvice] = useState(null);

  useEffect(
    () => {
      const timeout = setTimeout(() => {
        setAdvice(`Use ${url} to get some nice advice`);
      }, 1000);
      
      return () => clearTimeout(timeout);
    },
    [url]
  );

  return advice;
}

function App() {
  const advice = useAdvice("https://google.com");

  return <div>{advice}</div>;
}

ReactDOM.render(<App />, document.getElementById("root"));
<script src="https://unpkg.com/react@16.7.0-alpha.0/umd/react.production.min.js"></script>
<script src="https://unpkg.com/react-dom@16.7.0-alpha.0/umd/react-dom.production.min.js"></script>
<div id="root"></div>

user_36178860
Related