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  • What is modularity in nodejs

    What is modularity in nodejs

    In nodejs, modularization refers to splitting a large file into multiple small modules that are independent and dependent on each other. Each js file is considered a separate module; the modules are invisible to each other. If a module needs To use anothe
    2022-07-09
  • What is routing in nodejs

    What is routing in nodejs

    In nodejs, routing refers to the mapping relationship between url address and response function; a url address responds to an html page, which is to extract the business of a path matching relationship into a separate js file. The syntax for creating a ro
    2022-07-09
  • What does lts mean in nodejs

    What does lts mean in nodejs

    In nodejs, lts means long-term support and is the abbreviation of "Long Time Support"; Node has two release process lines, odd version and even version. When an odd version is released, the latest even version will immediately enter LTS maintena
    2022-07-09
  • How to use require in nodejs

    How to use require in nodejs

    In nodejs, require is used to load modules or files; the require function is a mechanism for synchronous loading at runtime. When this function uses a parameter, the parameter value can have the file name of the complete path module, or it can be the modu
    2022-07-08
  • What are the built-in modules of nodejs?

    What are the built-in modules of nodejs?

    Nodejs built-in modules: 1. path module, used to process file paths, the introduction syntax is "require('path')"; 2. until module, used to make up for the lack of js functions and add new APIs; 3. fs module, file operations System API;
    2022-07-08
  • How to solve nodejs 1909 error

    How to solve nodejs 1909 error

    In nodejs, the 1909 error can be solved by deleting ComSpec in the environment variable; the reason for the 1909 error is the conflict of system environment variables. You can find the "Advanced System Property Settings" in "About" in
    2022-07-08
  • Can nodejs be installed on windows7?

    Can nodejs be installed on windows7?

    Nodejs can be installed on Windows 7; in July 2011, Node released the Windows version with the support of Microsoft, but the highest nodejs version that windows7 can support is the "v13.14.0" version. Nodejs higher than this version can no longe
    2022-07-07
  • What do nodejs modules and packages do?

    What do nodejs modules and packages do?

    In nodejs, a module is a js file used to use some specified functions. By dividing all functions into modules, the scope of global variables and functions defined in each module is also limited to this module; packages It is used to manage modules and the
    2022-07-07
  • Is nodejs multi-threaded?

    Is nodejs multi-threaded?

    nodejs is not multi-threaded, but single-threaded; nodejs uses a single-threaded asynchronous non-blocking mode. Because of the JavaScript engine, node is single-threaded by default. A nodejs application cannot utilize multi-core resources and can use eve
    2022-07-07
  • How to use map method in react

    How to use map method in react

    In react, the map method is used to traverse and display a list of similar objects of the component; the map method is not unique to react and can call standard JavaScript functions on any array. The map method calls the provided function on each element
    2022-07-06
  • What is the difference between the data flow of vue and react?

    What is the difference between the data flow of vue and react?

    The difference between the data flow of vue and react is: vue is a responsive two-way data binding system, that is, a two-way binding data flow. When the data changes, the view also changes. When the view changes, the data also changes. It will change syn
    2022-07-06
  • There are several ways to pass values ​​in react routing

    There are several ways to pass values ​​in react routing

    There are three ways to pass values ​​in react routing: 1. "props.params" method, which can pass one or more values, but the type of each value is a string and cannot pass an object; 2. query method, which The method is similar to the get method
    2022-07-06
  • What is the use of react virtual dom

    What is the use of react virtual dom

    The uses of react virtual dom: 1. Improve the performance of react code. Virtual DOM is a js object. Creating a js object consumes much less performance than creating a real DOM. Replacing the creation of a real DOM with the creation of a virtual DOM will
    2022-07-06
  • Does react have a component library?

    Does react have a component library?

    React has a component library; the component library is a design plan that organizes components together to build through multi-dimensional combinations; component design is through the disassembly, induction, and reorganization of elements in functions a
    2022-07-06
  • What is context in react

    What is context in react

    In React, context is a way to pass data between component trees without manually adding props for each layer of components; context provides a way to share specified values ​​between components without having to explicitly pass them through the component.
    2022-07-06
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