When passing redirect: false to its options, signIn will return a Promise that only in email and credentials provider types resolves to an object with the following format. { error: string | undefined // Error code based on the type of error status: number // HTTP status code ok: boolean // `true` if the signin … Read more
constructor is not the right place for performing some actions. Because it will hold other operations until it’s finished. componentDidMount is the right choice because it’s an asynchronous function so that actions are run in the background and there’ll be no hamper in the UI rendering. Here’s a list that you can choose when to … Read more
Important point is, we should not mutate the state array directly, always do the changes in new array and then use setState to update the state value. As suggested by Doc: Never mutate this.state directly, Treat this.state as if it were immutable. Basic flow of updating a state array is: 1- First create the copy … Read more
You can make use of ref and ReactComponent named export when importing SVG file. Note that it has to be ref in order for it to work. The following examples make use of React hooks which require version v16.8 and above. Sample Dynamic SVG Import hook: function useDynamicSVGImport(name, options = {}) { const ImportedIconRef = … Read more
I’ve provided a working example that follows your second approach. Updating the component’s state is the preferred way to show/hide children. Given you have this container: <div id=”container”> </div> you can either use modern Javascript (ES6, first example) or classic JavaScript (ES5, second example) to implement the component logic: Show/hide components using ES6 Try this … Read more
Inside your useEffect you are logging list: console.log(list); So you either need to remove the above line, or add list to the useEffect dependencies at the end. so change this line }, [term]); to }, [term, list]);
Did you try the browserHistory option ? You will be able also to refresh the page from the browser or specify a url of one of existing routes and land on the right page. import { Router, Route, browserHistory } from ‘react-router’; ReactDOM.render(( <Router history={browserHistory}> <Route path=”https://stackoverflow.com/” component={MasterPage}> <IndexRoute component={LoginPage} /> <Route path=”/search” component={SearchPage} /> … Read more
This accepted solution appears not to work in React > 15.6 (including React 16) as a result of changes to de-dupe input and change events. You can see the React discussion here: https://github.com/facebook/react/issues/10135 And the suggested workaround here: https://github.com/facebook/react/issues/10135#issuecomment-314441175 Reproduced here for convenience: Instead of input.value=”foo”; input.dispatchEvent(new Event(‘input’, {bubbles: true})); You would use function setNativeValue(element, … Read more
You can simply spy to the method directly via the prototype. it(“responds to name change”, done => { const handleChangeSpy = sinon.spy(New.prototype, “handleChange”); const event = {target: {name: “pollName”, value: “spam”}}; const wrap = mount( <New /> ); wrap.ref(‘pollName’).simulate(‘change’, event); expect(handleChangeSpy.calledOnce).to.equal(true); }) Alternatively, you can use spy on the instance’s method, but you have to … Read more
If you call functional component directly, you are calling a custom hook actually. example: function A() { const [state] = useState([]) return ( <div>{state}</div> ) } A() <A /> If you call A(), the state mounts in parent fiber, but if you use <A />, React will call createElement to create a new fiber on … Read more