@ankitjain

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Promise Vs Callback

May 4, 2021 · 2 min read · Callbacks and Promises are used to run asynchronous tasks. Tasks which are based on certain result. First lets understand Callback. Callback is a function which is passed as a parameter to another function. Lets understand using an example of mak...

HTTP Prefetching

Apr 29, 2021 · 3 min read · Prefetch is downloading content in the background based on certain kind of assumption. Might be that you will visit that page, or could be the next step is to go to that page. Why prefetch the content ? Faster load times results in higher conversion...

HTTP Cookie

Apr 27, 2021 · 4 min read · Cookie is a data which is sent by the server to be stored in the browser for number of reasons. Browser stores it and sends it back to the server with every request. So cookie is used to verify whether the requests are coming from the same browser ...

useContext Hook - Part 1

Mar 18, 2021 · 5 min read · Context API ? Why do we need it ? Lets see a situation. We have a root component App.js, then the nested components under it. As you can see in the image. We want Component A, D and F to show the username property which is stored in the App.js com...

useEffect Hook

Mar 16, 2021 · 8 min read · useEffect ? side effects ? Why ? Google says, SideEffects are secondary to the one intended. side effects in React means, effects which happen when the component either renders the first time, or re-renders or unmounted. Before starting, I expect y...