Introduction ~~~~~~~        First of all, it is necessary to clarify that the so-called AVC is actually the H.264 standard, which was developed by the Joint Video Team (JVT) composed of ITU-T and ISO/IEC. ITU-T named this standard H.264 ( Formerly called H.26L), while ISO/IEC calls it MPEG-4 Advanced Video Coding (AVC) It is positioned to […]

In programming, dynamic variable names do not have specific names hardcoded in scripts. They are dynamically named using string values ​​from other sources. Dynamic variables are rarely used in JavaScript . But in some cases, they are useful. Unlike PHP, there is no special implementation of dynamic variable names in JavaScript. But similar results can

1. Problem description: When the height is fixed or not fixed, it is difficult to achieve vertical centering of single-line or multi-line text; Second, the solution: 1. Use the line-height property to set the line-height to be the same height as the element height. Limitations: Only applicable to single-line text, with great limitations. Code: .box

what is npm npm ( node ​​pakage manage) is a third-party package manager and is the default package management tool for the Node.js platform. what npm does Through npm, you can install, share, distribute code, and manage project dependencies. example: When configuring webpack, many third-party modules (modules occupy a pit) need to be installed through

This article describes how to create a web server in Linux system, and set up Systemd to automatically start and manage the operation of the web server. Set up an Echo server First write a simple echo server in Python and store it in /opt/echo_server.py : #!/usr/bin/env python3 import socket # create socket serv =

The first alpha release of PHP 8.2 is now available for testing. PHP 8.2 Alpha 1 is the first QA release of PHP 8.2. Although they are unstable and not suitable for use in production systems, they provide an opportunity to test upcoming PHP versions in advance. PHP 8.2 Alpha 1 is the first release