Posted by Prem Tiwari | Updated on | ReactJS interview
How to use as placeholder using React Intl? The components from react-intl return elements, not plain text, so they can’t be used for placeholders, alt text, etc. In that case, you should use lower level …
Posted by Prem Tiwari | Updated on | ReactJS interview
What are the main features of React Intl? Below are the main features of React Intl, Display numbers with separators. Display dates and times correctly. Display dates relative to “now”. Pluralize labels in strings. Support …
Posted by Prem Tiwari | Updated on | ReactJS interview
What is React Intl? The React Intl library makes internalization in React straightforward, with off-the-shelf components and an API that can handle everything from formatting strings, dates, and numbers, to pluralization. React Intl is part …
Posted by Prem Tiwari | Updated on | ReactJS interview
How to implement default or NotFound page? A renders the first child that matches. A with no path always matches. So you just need to simply drop path attribute as below:
Posted by Prem Tiwari | Updated on | ReactJS interview
How to get query parameters in React Router v4? The ability to parse query strings was taken out of React Router v4 because there have been user requests over the years to support different implementation. …
Posted by Prem Tiwari | Updated on | ReactJS interview
What is the purpose of push() and replace() methods of history? A history instance has two methods for navigation purpose. push() replace() If you think of the history as an array of visited locations, push() will add a new location to the …
Posted by Prem Tiwari | Updated on | ReactJS interview
What are the components of React Router v4? React Router v4 provides below 3 <Router> components: <BrowserRouter> <HashRouter> <MemoryRouter> The above components will create browser, hash, and memory history instances. React Router v4 makes the properties and methods of the history instance associated …
Posted by Editorial Staff | Updated on | ReactJS interview
How React Router is different from history library? React Router is a wrapper around the history library which handles interaction with the browser’s window.history with its browser and hash histories. It also provides memory history …
Posted by Andre Scott | Updated on | ReactJS interview
What is React Router? React Router is a powerful routing library built on top of React that helps you add new screens and flows to your application incredibly quickly, all while keeping the URL in …
Posted by Editorial Staff | Updated on | ReactJS interview
What are render props? Render Props is a simple technique for sharing code between components using a prop whose value is a function. The below component uses render prop which returns a React element. Libraries …
Posted by Prem Tiwari | Updated on | ReactJS interview
How to make AJAX call and in which component lifecycle methods should I make an AJAX call? You can use AJAX libraries such as Axios, jQuery AJAX, and the browser built-in fetch. You should fetch …
Posted by Prem Tiwari | Updated on | ReactJS interview
What are the popular React-specific linters? ESLint is a popular JavaScript linter. There are plugins available that analyse specific code styles. One of the most common for React is an npm package called eslint-plugin-react. By …
Posted by Prem Tiwari | Updated on | ReactJS interview
How to define constants in React? You can use ES7 static field to define constant.
Posted by Prem Tiwari | Updated on | ReactJS interview
Why is a component constructor called only once? React’s reconciliation algorithm assumes that without any information to the contrary, if a custom component appears in the same place on subsequent renders, it’s the same component …
Posted by Prem Tiwari | Updated on | ReactJS interview
How to import and export components using React and ES6? You should use default for exporting the components: With the export specifier, the MyProfile is going to be the member and exported to this module …
