Veltris Interview Questions, Process, and Tips for Experienced

Let, Var, and Const are JavaScript keywords used for declaring variables with different scoping rules and mutability.

• Var has function scope and can be redeclared and reassigned.

• Let has block scope and can be reassigned but not redeclared.

• Const has block scope and cannot be reassigned or redeclared.

• Use const for values that won't change, let for values that will, and var for legacy code or global variables.

React Native has several life cycle methods that are called at different stages of the component's life.

• Mounting: constructor(), componentWillMount(), render(), componentDidMount()

• Updating: componentWillReceiveProps(), shouldComponentUpdate(), componentWillUpdate(), render(), componentDidUpdate()

• Unmounting: componentWillUnmount()

• Error Handling: componentDidCatch()

To upload the app to both stores, create separate builds for each platform and follow the submission guidelines of each store.

• Create separate builds for iOS and Android platforms

• Follow the submission guidelines of the App Store and Google Play Store

• Submit the builds to each store separately

• Ensure that the app meets the requirements of each store

Local storage in React Native allows data to be stored on the device for offline use.

• AsyncStorage is the built-in API for local storage in React Native

• Data is stored as key-value pairs

• Data can be retrieved and updated asynchronously

• Local storage can be used for caching data for offline use

• Example: AsyncStorage.setItem('key', 'value')

• Example: AsyncStorage.getItem('key')