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  • Detailed introduction to the basic concepts and usage of Promise in JavaScript

    Detailed introduction to the basic concepts and usage of Promise in JavaScript

    This article brings you relevant knowledge about JavaScript. It mainly organizes the basic concepts of Promise and related issues about how to use it, including the basic concepts of Promise, using Promise to solve callback hell, etc. Let’s take a look at
    2022-07-21
  • Let’s talk about height design in responsive web pages. Do you need to reduce the height of the browser?

    Let’s talk about height design in responsive web pages. Do you need to reduce the height of the browser?

    When you see this title, you may think that there is another typo, responsive height design? Are you serious? Because "responsive web design" typically checks browsers on multiple widths and device sizes. We generally adjust horizontal responsiv
    2022-07-20
  • What is the difference between the old and new life cycles of react

    What is the difference between the old and new life cycles of react

    The difference between the old and new life cycles of react: 1. Three will hooks have been removed from the new life cycle, namely componentWillMount, componentWillReceiveProps, and componentWillUpdate; 2. Two new hooks have been added to the new life cyc
    2022-07-20
  • What are parent-child components in react

    What are parent-child components in react

    In the mutual calls between react components, the caller is called the parent component and the callee is called the child component. Values ​​can be passed between parent and child components: 1. When a parent component passes a value to a child componen
    2022-07-20
  • what is react conditional rendering

    what is react conditional rendering

    In React, conditional rendering refers to rendering under specified conditions. If the conditions are not met, no rendering will be performed; that is, the content of the interface will display different content according to different situations, or decid
    2022-07-20
  • What is react? What is Ant Design?

    What is react? What is Ant Design?

    React is a JavaScript development framework launched by Facebook for building user interfaces. It is mainly used to build UIs, making it easy to create interactive UIs. Ant Design is a UI component developed by the Alibaba Ant Financial team based on Reac
    2022-07-20
  • What is the fs module in node

    What is the fs module in node

    In node, the fs module refers to the "file system module", which is a module used to operate files. Most APIs of the fs module provide three operating methods: 1. Synchronous file operation: the code will be blocked and will not continue to exec
    2022-07-20
  • There are several types of streams in node

    There are several types of streams in node

    There are 4 types of node streams: 1. Readable (readable stream). The "_read" method needs to be implemented to return content; 2. Writable (writable stream), the "_write" method needs to be implemented to accept content; 3. Duplex (re
    2022-07-19
  • What are the three mainstream frameworks for web front-end?

    What are the three mainstream frameworks for web front-end?

    Three mainstream web front-end frameworks: 1. Angular, a front-end framework used to create a single application interface, with powerful module functions and custom commands; 2. React, a JavaScript used to build user interfaces Development framework, mai
    2022-07-19
  • What is the relationship between npm and node.js?

    What is the relationship between npm and node.js?

    npm means "node package manager" in Chinese. It is the default package management tool of the Node.js platform. It will be installed together with Nodejs. npm manages third-party plug-ins corresponding to node.js; you can install, share, and dis
    2022-07-19
  • What does gulp mean in nodejs

    What does gulp mean in nodejs

    Gulp is a flow-based code construction tool in the front-end development process. It is an automatic task runner based on Nodejs. It can not only optimize website resources, but also automatically complete the testing, inspection, merging, compression, an
    2022-07-18
  • Share some selected web front-end interview questions worth collecting (with answers)

    Share some selected web front-end interview questions worth collecting (with answers)

    This article summarizes some selected Web front-end interview questions worth collecting (with answers). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.
    2022-07-18
  • Can reactjs only run in node?

    Can reactjs only run in node?

    reactjs does not only run in node; it is a JavaScript library used to build user interfaces. In development mode, the Create react application runs NodeJs and Webpack development servers, but if it is not rendered on the server side, reactjs is just a fro
    2022-07-18
  • What is a global package in node

    What is a global package in node

    In node, the global package refers to the tool package used to install local packages in the project, such as nrm, yarn, cnpm, etc.; the software package is a library included in the program and must be installed in every project that uses the software pa
    2022-07-18
  • Does socketio have to be used in node?

    Does socketio have to be used in node?

    Socketio must be used in node; socketio is a library of nodejs. It uses nodejs functions to encapsulate some functions and relies on some nodejs APIs, so it can only be used in nodejs. Socketio is also established between the client and the server. Two-wa
    2022-07-18
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