When I map the array directly, I don’t face any error but if I pass the same array through props, I face the error that "Cannot read property ‘map’ of undefined" brands array const brands = [ { key: 1, Name: "Nike", }, { key: 2, Name: "Adidas", }, { key: 3, Name: "Apollo", }, ..
Archives : February-2021
I have an input form that selects data to be rendered inside my tables. The data only appears after a forced page reload. I would like for the data to re-render with the expected data entered by the user after each submit in my input. To do so I have: an input function called SymbolInput() ..
I’m having some difficulty running full test coverage from a script in the package.json of my create-react-app. Link to repo here; package.json { "name": "React Kitchen Sink", … "dependencies": { … "react": "^16.14.0", "react-dom": "^16.14.0", "react-scripts": "^3.4.4" }, "scripts": { "start": "react-scripts -r @cypress/instrument-cra start", "start:silent": "BROWSER=none yarn start", "start:server": "start-server-and-test start:silent http://localhost:3000", "build": "react-scripts ..
I have a Django app that’s using corsheaders package and its in settings.py like this: INSTALLED_APPS = [ …, corsheaders, …] … MIDDLEWARE = [ # on top "corsheaders.middleware.CorsMiddleware", "django.middleware.common.CommonMiddleware", … ] … CORS_ORIGIN_ALLOW_ALL = True CORS_ALLOW_CREDENTIALS = True When I’m trying to do a PATCH request ..
When I enter a search term (name, email, username) I want the page to filter out one card from all of the cards based on the search value. I think when the user presses enter, we would need to redirect to a new page to display the card. I have the code for searchbar and ..
When I use class component, I have code: setTimeout(() => console.log(this.state.count), 5000); When I use hook: const [count, setCount] = useState(0); setTimeout(() => console.log(count), 5000); If I trigger setTimeout then change the count to 1 before the timeout (5000ms), class component will console.log(1) (the newest value), and for useState it is console.log(0) (value when register ..
I’m trying to get a list of available Bluetooth devices using this example. (I don’t use emulators, I’ve connected the phone via USB.) This is an official example of the code. Code is here However, I can’t see any devices. The event ‘handleDiscoverPeripheral’ is never triggered. I should be able to see at least 2 ..
I am using Expo Camera to take some user pictures for a profile form. What is happening is when I try to set camera’s ref to a state it crashes and throw the following error. Couldn’t find a navigation context. Have you wrapped your app with ‘NavigationContainer’? See https://reactnavigation.org/docs/getting-started for setup instructions. Everything is inside ..
I have routs with children and on the first load, everything working fine but once I’m staring through the site, the components starting to render twice. I’m not sure what I’m doing wrong. This is the route top structure: <React.Suspense fallback={<span>Loading…</span>}> <Switch> <Route path={"/dashboard/optionOne"} component={OptionOne} /> <Route path={"/dashboard/OptionTwo"} component={OptionTwo}/> <Switch> </React.Suspense> Then these are the ..
I have a search component that is global to my application, and displays search results right at the top. Once the user does any sort of navigation, e.g., clicking a search result or using the back button on the browser, I want to reset the search: clear the results and the search input field. Currently, ..
Cazare Cristian Brasov
Recent Comments