how to call api on load using hooks in react
function User() {
const [firstName, setFirstName] = React.useState(null);
const [lastName, setLastName] = React.useState(null);
React.useEffect(() => {
fetch('https://randomuser.me/api/')
.then(results => results.json())
.then(data => {
const {name} = data.results[0];
setFirstName(name.first);
setLastName(name.last);
});
}, []); // <-- Have to pass in [] here!
return (
<div>
Name: {!firstName || !lastName ? 'Loading...' : `${firstName} ${lastName}`}
</div>
);
}
ReactDOM.render(<User />, document.querySelector('#app'));