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Local nodejs cannot be accessed from the external network

In the Internet era, developers often need to deploy applications to external network environments such as cloud servers to facilitate user access. However, sometimes we encounter some problems. For example, when deploying a Node.js program, it can only be accessed locally, but cannot be accessed normally from the external network. This situation can be very confusing for developers, but there is a solution. Possible Causes First, we need to understand what might be causing this issue. In fact, several common reasons for this situation are as follows: 1. Firewall settings may be blocked by your firewall or router

May 14, 2023 am 09:13 AM

Is nodejs frontend or backend?

Node.js can be a little confusing for beginners because it can run in both the foreground and the background. So, is Node.js the frontend or the backend? The answer is that it can be used as both a front-end and a back-end, with great flexibility. In web application development, JavaScript is usually used for front-end browser-side program development, mainly used to respond to user requests, render web pages, and interact directly with users. Node.js can run JavaScript programs on the backend. This means it can handle services

May 14, 2023 am 09:12 AM

Nodejs installs Taobao mirror

Node.js is a server-side JavaScript engine that provides a way to run JavaScript code. Node.js is becoming increasingly popular in web development due to its highly modular nature and ease of development. The Taobao mirror is a mirror server specifically for NPM, which can provide faster download speeds than the official npm source. This article will introduce how to install the Taobao mirror in Node.js. Why do you need to install Taobao mirror? Node.js and npm use the official npm source for download by default

May 14, 2023 am 09:11 AM

nodejs default port cannot be opened

Node.js is a very popular JavaScript runtime environment that runs JavaScript code on the server side. Node.js solves many of the problems associated with writing server-side code and can wait for connection requests, accept requests, and respond. Similar to other server-side programming languages and frameworks, Node.js also needs to listen on a port to accept connection requests. However, sometimes we encounter the situation that the default port cannot be opened. Next, let us take a look at the solution to this problem.

May 14, 2023 am 09:09 AM

Overview of EventLoop library in PHP8.0

With the development of the PHP language, developers need more tools to solve the needs and challenges of modern applications, one of which is event-driven programming, and the EventLoop library of PHP8.0 was born for this purpose. This article will provide an overview and introduction to the library. What is EventLoop In traditional PHP applications, most operations are synchronous. In other words, the program will execute some code, then wait for the relevant data to return, and then continue to execute subsequent code. This programming model is useful for some applications

May 14, 2023 am 08:49 AM

PHP EventLoop库概述

nodejs is not equal to

JavaScriptNode.js has become a very popular back-end technology and is widely used in web applications, command line tools, desktop applications, etc. Its popularity and range of use are incredibly broad. However, although the JavaScript code running in Node.js looks very similar to the front-end Javascript code, this does not mean that Node.js is equivalent to JavaScript. What is Node.js? Node

May 13, 2023 pm 10:50 PM

Nodejs implements drift bottle

Node.js realizes the drift bottle. The drift bottle is a traditional and romantic thing that can drift with the current and drift far away. In the digital age, we can simulate this kind of toys through technical means. This article will introduce how to use Node.js to implement a simple drift bottle application. Step 1: Build a basic environment First, we need to ensure that Node.js is installed on the computer. After the installation is complete, enter the following command on the command line to check whether Node.js is installed successfully: ```node -v``` If the installation is successful, enter

May 13, 2023 pm 10:39 PM

The nodejs project only uploads dist

During the development process, we usually use many tools and frameworks to assist development. These tools and frameworks will generate some products after development, such as packaged code, compiled files, compressed resources, etc. When deploying these products to the production environment, we usually only need to upload these products, without uploading the code and configuration files of the entire development process. Doing so can reduce the size of uploaded and downloaded files, reduce network transmission time, and improve the speed and efficiency of deployment. For Node.js projects, we can only upload the dist directory

May 13, 2023 pm 10:29 PM

nodejs string to utf8

Node.js is an open source cross-platform JavaScript runtime based on the V8 JavaScript engine, which allows JavaScript to be used to develop server-side applications and command line tools. In Node.js, strings play a very important role in different operations and processing, and UTF-8 encoding is a widely used character encoding. UTF-8 encoding is a variable-length encoding method that is compatible with ASCII code and supports a wider range of character sets and languages. When processing strings, you need to convert characters

May 13, 2023 pm 10:29 PM

What language is used to develop nodejs?

Node.js is developed based on the JavaScript programming language. JavaScript is an object-oriented dynamic language. Many people think that JavaScript is only a scripting language in front-end development work because it is the core language in DOM operations and Ajax technology. But in fact, JavaScript can also be used as a back-end development language. use. With the emergence of large-scale web applications and the popularity of Node.js, JavaScript

May 13, 2023 pm 09:55 PM

nodejs packaging and deployment

As the complexity of web applications increases, Node.js becomes the choice of more developers to reduce development time and costs, whether building large or small to medium-sized applications. Node.js is an open source, cross-language runtime environment for server-side applications written in JavaScript. It is designed to provide efficient I/O operations, extremely low overhead, and high scalability. In this article, we will look at how to package and deploy our application using Node.js. 1. What is packaging and deployment in Node.j

May 13, 2023 pm 09:47 PM

nodejs delete folder module

In Node.js, deleting a folder is a very common operation, but sometimes the folder deletion fails. This may be because the folder contains certain files or subfolders, causing an error during the deletion process. Therefore, we need to use a specialized module to delete the folder and all its contents. Node.js provides a built-in module fs, which can be used to operate the file system. However, the fs module does not provide a direct way to delete a folder and all its contents. Therefore, we need to use a third party

May 13, 2023 pm 08:55 PM

nodejs rpc remote procedure call

Node.js is a popular JavaScript runtime environment that makes it easy to develop high-performance applications. One of the main advantages of Node.js is its support for an asynchronous programming model that can easily handle high concurrent requests. At the same time, Node.js also provides many modules and libraries that can be used to build various types of applications. Among them, RPC (Remote Procedure Call) is a basic network protocol that allows one program to execute a program in another program.

May 13, 2023 pm 08:45 PM

What does nodejs do?

As web applications continue to develop, Node.js has become a commonly used programming language. Especially in web server and backend development, Node.js has become a very popular choice. This article will delve into the background, features, and why Node.js is so useful in web application development. 1. Background of Node.js Node.js was originally created by Ryan Dahl in 2009. It is a V8 JavaScri based on the Google Chrome browser.

May 13, 2023 pm 08:42 PM

ssh install nodejs

SSH installation Node.jsNode.js is a JavaScript running environment based on the Chrome V8 engine, which allows JavaScript to be run, developed and debugged on the server side without the browser. In this article, we will explain how to install Node.js on an SSH terminal. Step 1: Log in to the SSH terminal First, you need to log in to your server using an SSH terminal. You can use PuTTY (Windows), Terminal

May 13, 2023 pm 08:07 PM