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Showing posts with the label React

How to use react native text input?

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How to use react native text input? Handling text input in React Native can be a tricky task, especially for beginners. However, with a little bit of knowledge and practice, it becomes a breeze. In this blog, we will cover everything from basic to advanced techniques for handling text input in React Native. First, let's start with the basics. In React Native, the most commonly used component for handling text input is the  TextInput  component. This component allows the user to enter and edit text. It has a wide range of props that can be used to customize its behavior and appearance. Some of the most commonly used props include: value : The current value of the text input. onChangeText : A function that is called when the text input's value changes. placeholder : The text to be displayed when the input is empty. secureTextEntry : A boolean value that determines whether the text input should hide the entered text (e.g. for passwords). Here's an example of a basic text input...

How to create custom hook in react?

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In React, a custom hook is a JavaScript function that starts with the word “use” and that can call other hooks. Custom hooks allow you to extract component logic into reusable functions. To create a custom hook, you can define a function that starts with the word “use” and that includes any logic that you want to reuse. You can then call this function within your components to access the logic it contains. Here is an example of a simple custom hook that manages the state of a toggle button: This custom hook uses the built-in  useState  hook to manage a piece of state that represents whether the toggle button is on or off. It also defines a function called  toggle  that can be used to toggle the state. The hook returns an array that contains the current state and the toggle function. Then you can use this custom hook in your component: In this example, the  MyToggleButton  component calls the  useToggle  custom hook and destructures the returned ar...

What is fabric architecture in react?

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What is fabric architecture in react? Fabric is the new rendering system for React Native. It is a conceptual improvement on the old render system. Unlocking new capabilities for React Native, enhancing interoperability with host platforms, and unifying more render logic in C++ are the fundamental principles. The Facebook app's development began in 2018, and the new renderer will support React Native in 2021. Better user experiences that were not possible with the legacy architecture were made possible by the render architecture. Here are some examples: React Fabric is a set of libraries and components for using the Microsoft Fabric design system to build web applications with React. Fabric is a set of design principles and user interface (UI) components that developers can use to create applications that are consistent, visually appealing, and easy to use. Button, form, list, and other pre-built UI components, all of which adhere to the Fabric design guidelines, are available from...

What is web pack in react?

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Webpack is a JavaScript module bundler. It is a tool that takes all of the different JavaScript files and other assets that make up a web application, and it generates a single bundle that can be included on a webpage to load the entire application. In a React application, Webpack is often used to bundle together the JavaScript files that make up the application, as well as any other assets such as CSS, images, and fonts. This allows you to write your application using a variety of different modules and dependencies, and then use Webpack to generate a single bundle that can be loaded by the browser. Webpack also allows you to use a variety of different loaders and plugins to process and optimize your assets before they are included in the bundle. For example, you might use a loader to transpile your JavaScript from newer syntax to an older version that is compatible with more browsers, or a plugin to minify your CSS and JavaScript to reduce the size of the bundle. Webpack is often used...

How to Use useCallback to Improve React Native Performance

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How to Use useCallback to Improve React Native Performance Memoizing a callback function is made possible by the useCallback hook in React. This indicates that the callback will only be recreated if one of the passed hook dependencies has changed. Performance optimization can benefit from this, particularly when passing callback props to child components. You must pass two arguments to the useCallback hook in order to use it: the callback function and a list of its dependencies. If any of the dependencies have changed, The hook will return a new callback function that will only be recreated if any of the dependencies have changed.. For example: const myCallback = useCallback(() => {   // Do something  }, [dependency1, dependency2]); After that, you can pass myCallback to a child component as a prop. Only if either dependency1 or dependency2 changes will the child component re-render. Keep in mind that the dependency array should not contain any props or state variables...