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React, also known as React.js or ReactJS, is an open-source JavaScript library created by Facebook for building user interfaces, specifically for single-page applications (SPAs). It enables developers to create reusable UI components and manage the state of their applications efficiently. There ar...
React can also be used on the backend with technologies like Next.js, which allows for server-side rendering of React applications, blurring the line between frontend and backend to some extent. Overall, though, React is predominantly associated with frontend...
The useCallback hook in React is an effective mechanism for enhancing component performance by caching functions. In React, functions defined within components are recreated during eachrendercycle, which can result in unnecessary re-renders of child components that depend on those functions. This can ...
export default App; InApp.jswe have a very simple application that has two input fields. It saves the provided values in the state of the application. When the user clicks on theLoginbutton the handler gets executed. Unfortunately given that this is a demo application and that our server en...
What is a key in React? It’s pretty often that whenever we are to render multiple components based on a mapping operation, we also want to maintain the orders of the components according to the data they’ve been mapped from. From a developer’s perspective, it does seem straightforward....
If you have been in the React ecosystem for a while, there is a possibility that you have heard about Higher Order Components. Let’s look at a simple
React: <Theme system="express" scale="medium" color="light"> 2025-03-21Added A native Color Picker is available to add-ons via the showColorPicker() and hideColorPicker() methods of the addOnUiSdk.app object. We've updated the Use Color How-to guide, now including a few examples on...
In React, a template is compiled into a bunch ofReact.createElementfunction calls. In the code below I’m using theelvariable as an alias for the the function: constel=React.createElement;exportclassRatingComponentextendsReactComponent{...render() {returnel('ul', { class...
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