Tag: react-native

How to change graphs in react from an options form?

I am new in React and I want to change two graphs made in js depending on a form made with bootstrap form. My code in react is the following: I have not been able to change the graph from the options, only the two graphs appear at the same time. Here the image! Answer **I GOT IT!!! I find

Jest testcase breaking in React Native Expo

expo javascript jestjs react-native

Following is the error I receive on running a Sample testcase: My Testcase: My jest configuration in package.json: My dependencies in package.json: expo version: 37.0.0 react: `16.9.0 react-native: “https://github.com/expo/react-native/archive/sdk-37.0.1.tar.gz” Answer Found the solution on the Ex…

How to override React Native Component?

javascript react-native reactjs

Dear Friend I am trying to override a method in react native component, please let me know how I can achieve that. Answer There is no such a thing as component override as I know. But if you want to customize the component then you can wrap with with another component and you can use props for access the defa…

Component doesn’t update once the parents state is changed

javascript react-native react-props reactjs state

I’m attempting to get a timer to call a function quickly at first and then slow down. I have a TimeInterval state that increases and is passed down to my countdown component as a prop Countdown Component My TimeInterval state is working properly and will increase as NextSelection() is called. However th…

Triggering refresh on function component with navigate (React Native)

javascript react-native

One of my screens in my app is a function component which looks like this: So that onPress you see in DonationItem navigates to another screen called DonationFormScreen. What is in this screen doesn’t really matter except that there is another navigate called in one of its methods: And last, “Dona…

Parsing JSON object with AsyncStorage

asyncstorage javascript react-native

I am basically trying to write and read a simple object. Writing: AsyncStorage.setItem(‘@Test’, JSON.stringify(newStudent)) Reading: console.log(JSON.parse(AsyncStorage.getItem(‘@Test’))) But im getting “Uncaught SyntaxError: Unexpected token o in JSON at position 1”. I Als…

How can I change “created using create-react-app” in search results?

create-react-app javascript react-native reactjs

I am trying to post the link to my portfolio onto linkedin and it always shows up with “Web site created using react app” as the description, which definitely doesn’t make it look professional. It is deployed on my domain but is there any way I can get rid of all the create-react-app default…

How to avoid re-rendering when i pass an object as prop to child component?

ecmascript-6 javascript react-native reactjs

I have parent component with multiple child components. Different types of data will be passed to child components after getting data from api. Some of the components will get object as a prop. I am trying to avoid rerenders in that component. Even if the data is same it is rerendering. How can i avoid this r…

react native: there is way to change color of radio button?

javascript radio-button react-native reactjs

there is way to color the whole button both inside and outside ? coz as it now so its color white in outside and the inside is blue but i want it will be white also . i use the react-native-simple-radio-button and u can see the link.. the link Answer when use RadioForm you can set selectedButtonColor prop exa…