on that website to go to another page, a new request is sent to the server to load that new page. The back and forth loading process between your browser (client) and the server will continue for every page you try to access on a website. While this typical approach to loading a website works well, consider a website with a lot of data. It will definitely create a poor user experience.
Additionally, when data changes in
a traditional javascript application, it requires manual dom manipulation to reflect those changes. You have to identify what data has changed and update the dom to reflect those changes, which results in a full page reload. React takes a different approach by allowing you to build what are called single page applications (spa). A single page application loads just a single html document on the first request. It then updates the specific part, or content.
This pattern is called client-side
routing because the client doesn’t have to reload the entire web page to get a new page every time the user makes a new request. Instead, react intercepts the request and only fetches and changes the parts that need to change without triggering a full page reload. This approach results in better performance and a more dynamic user experience. React relies on a virtual dom, which is a copy of the real dom.
React’s virtual dom is instantly
reloaded to reflect this new change whenever there is a change in the data state. React then compares the virtual dom with the real dom to figure out truemoney database exactly what changed. React then finds the least expensive way to patch the actual dom with that update without rendering the actual dom. As a result, react components and uis reflect changes very quickly because you don’t have to reload the entire page every time something updates.
Summary of common reactjs interview questions
Reactjs interview questions for intern and fresher developers – what are the outstanding features of reactjs? – what are props used for in react? – how to comment in reactjs? – distinguish real dom from virtual dom in reactjs – how is react’s usa phone number to someone located syntax in es6 different from es5? – how to create event in react.Js? – what is the function render() in react? – state the difference between react.
Js and another basic javascript framework
angular 2. Reactjs interview questions for junior developers – where is state stored in react + redux applications? – is the setstate function in react.Js a uk data synchronous or asynchronous function? Why? – what is the biggest difference between state and props? – how does the component life cycle work in react? – what is the difference between functional component and class component? – where should you make ajax calls in a react component? – what is the difference between presentational and container components?
