Learn how to use the forwardRef function in React to expose DOM nodes inside a component to its parent component. In React, refs are used for storing values that don’t trigger a re-render when updated. We can also assign refs to DOM elements so that we can reference the ref to manipul...
First, let’s see the npm packageuuidand its use among the developer community. UUID, which stands for Universal Unique Identifier, is a unique value that is practically useful in jobs like the migration of data on the databases with other uses like identifying information that needs to be un...
useCallback被用来储存函数,而React memo用于包装React组件以防止多余重新渲染。 让我们以React应用程序的以下示例为例,该应用程序呈现用户项列表,并允许我们使用回调处理程序添加和删除项。我们使用React的useState Hook来使列表成为可控: import React from 'react'; import { v4 as uuidv4 } from 'uuid'; const...
How do I use the hdc command to send a local file to a remote device? How do I check whether an application is a system application? How do I capture the crash stack and implement the crash callback? How do I analyze the CPU usage of an application in running? How do I quic...
Firstly, we will create a boilerplate app that we'll use to add the file upload markup and logic. We will use Vite and TypeScript. Copy npmcreate vite@4 react-file-upload ---templatereact-ts Do not forget to install the deps as the scaffolding command described above tells you in the...
How do I use the hdc command to send a local file to a remote device? How do I check whether an application is a system application? How do I capture the crash stack and implement the crash callback? How do I analyze the CPU usage of an application in running? How do I quic...
yes, event listeners can be attached to elements that are dynamically created or added to the dom. you can use event delegation by attaching the event listener to a parent element that already exists in the dom. this way, the event will be captured for any dynamically added child elements ...
using streaming data points offers several benefits. first, it enables real-time insights and decision-making, allowing businesses to react swiftly to changing circumstances. second, it reduces the need for storing massive amounts of data, as only relevant information is processed and analyzed on ...
The point where the kernel starts its first user-space process, init, is significant—not just because that’s where the memory and CPU are finally r...
In this post, we'll learn how to test the props a React Function Component receives with React Testing Library and Jest. 2023 October update: the article got popular and I also found new ways to test component props, especially ones that don't stringify well, such as big Immutable.Map. ...