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A callback function in JavaScript is a function that is passed as an argument to another function and is invoked after some kind of event.
In this tutorial, we are going to learn about callback functions in JavaScript. What is a Callback function? When we call a function that function will call other function by itself is called callback function. example: function add(a,b,callback){ return callback(a,b) } add(1, 2, ...
The useContext hook in React is a powerful tool for simplifying context consumption in functional components. It provides a straightforward way to access context values without the need for a consumer component, streamlining code and improving readability. With useContext, you can manage global state,...
with React Compiler, we don't need to do that anymore, So what exactly does the compiler do in this cases? It doesn't use useMemo or useCallback at all, Instead, the compiler manualy caches the values and resuses them if dependencies stay the same. ...
While we know React is written in JavaScript, why should that matter so much? It matters because JavaScript is one of the most used programming languages in the world. In fact, 9.7 million developers use it for their programming needs, making it the best choice for a wide-spread building ...
React provides several ways to optimize the performance of applications, such as using the React.memo() function to memoize functional components, shouldComponentUpdate() to prevent unnecessary updates in class components, or the useCallback and useMemo hooks in functional components. ...
The most promising advancement in the React 18 is that many of the features are built on top of Concurrent Renderer, a modification made behind the scenes that enables significant new capabilities. Concurrent React is an opt-in feature that is only active when you use a concurrent feature. How...
You use this chance to smooth down a few of the DOM implementation's jagged boundaries in the window. All DOM attributes and properties in React, especially event handlers, should be in camelcase. For instance, the React bar Index feature is equivalent to the HTML tab index property. The ...
By moving compat into the same package as Preact itself, there's nothing extra to install in order to use libraries from the React ecosystem.The compatibility layer is now called preact/compat, and has learned several new tricks such as forwardRef, memo and countless compatibility improvements....