Browser kernel information sorting
In the 21st century, the variety of browsers is enough to dazzle you. When we do page compatibility testing, how should we debug our web pages in the face of numerous browsers? In fact, if you understand the core of the browser, you won't have a headache. Because their cores are not as numerous as their number, the common types of cores can be classified into four types: Trident, Gecko, WebKit, and Presto.
As for the many browsers, they are just: {shells of different browsers kernel = browser}. The shell refers to the menus and toolbars on the browser interface, which allow users to operate. And they all call the kernel to implement various functions. It can be seen that the kernel is the core of the browser. Therefore, as long as we understand what the core engine of a browser is, we can then conduct compatibility testing on it without feeling stuck.
The core of the browser can be divided into: rendering engine and js engine:
Rendering engine: layout engineer or Rendering Engine, which are responsible for parsing and rendering of page content , that is, when visiting a website, the process goes from a blank page to the completion of page loading, from a simple page to a complete layout. It parses the page's tags, loads the css, and calculates how the page should be displayed. This understanding is that there are different browser cores, and their lexical parsing of web pages is also different, so there are display differences, which is a headache compatibility issue for our front-end development.
js engine: parses the page script (javascript) language to achieve some dynamic effects on the page.
Introduction to the four cores:
1. Trident: an engine developed by Microsoft. Its IE products are driven by it, and many other browsers also use it as the kernel. Because Microsoft IE has always been the leader, it is a bit self-developed, and its support for W3C standards is not that good. There are many bugs, and there were very few updates at first, which led to the existence of ie5, ie6 and other evil browsers, which made many students with little front-end development experience despise it! Yes, starting from ie8, ie has slowly become more powerful again. I look forward to ie10...
2. Gecko: an open source rendering engine, written in C, with powerful functions, rich functions, and can support many complex functions. FireFox is the representative of web page effects and browser extension interfaces. It has good support for w3c standards and is very powerful in development and debugging, but the startup speed is not very fast;
3. WebKit: developed by Apple based on KHTML. The parsing of web pages is relatively fast, only second to Presto, but the fault tolerance is relatively poor, and non-standard web pages cannot be displayed normally. Representative browsers that use it for core development are Safari and Chrome;
4. Presto: Started by Opera Software, it is recognized as the fastest rendering engine. When processing scripting languages such as JS scripts, it will be about 3 times faster than other kernels, but there are also some problems with the speed, that is, some web compatibility is lost;
Now, I guess you have a certain understanding of browsers , it should be helpful for you to deal with browser compatibility issues in the future. Different kernels have different rendering engines, and their parsing of pages is also different. This is the reason for page differences. But if we try to use a streamlined HTML structure and use CSS reasonably when laying out, we can greatly reduce compatibility issues and speed up our development efficiency.
Related articles:

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Apache server is a powerful web server software that acts as a bridge between browsers and website servers. 1. It handles HTTP requests and returns web page content based on requests; 2. Modular design allows extended functions, such as support for SSL encryption and dynamic web pages; 3. Configuration files (such as virtual host configurations) need to be carefully set to avoid security vulnerabilities, and optimize performance parameters, such as thread count and timeout time, in order to build high-performance and secure web applications.

When developing websites using CraftCMS, you often encounter resource file caching problems, especially when you frequently update CSS and JavaScript files, old versions of files may still be cached by the browser, causing users to not see the latest changes in time. This problem not only affects the user experience, but also increases the difficulty of development and debugging. Recently, I encountered similar troubles in my project, and after some exploration, I found the plugin wiejeben/craft-laravel-mix, which perfectly solved my caching problem.

The Installation, Configuration and Optimization Guide for HDFS File System under CentOS System This article will guide you how to install, configure and optimize Hadoop Distributed File System (HDFS) on CentOS System. HDFS installation and configuration Java environment installation: First, make sure that the appropriate Java environment is installed. Edit /etc/profile file, add the following, and replace /usr/lib/java-1.8.0/jdk1.8.0_144 with your actual Java installation path: exportJAVA_HOME=/usr/lib/java-1.8.0/jdk1.8.0_144exportPATH=$J

Nginx performance monitoring and troubleshooting are mainly carried out through the following steps: 1. Use nginx-V to view version information, and enable the stub_status module to monitor the number of active connections, requests and cache hit rate; 2. Use top command to monitor system resource occupation, iostat and vmstat monitor disk I/O and memory usage respectively; 3. Use tcpdump to capture packets to analyze network traffic and troubleshoot network connection problems; 4. Properly configure the number of worker processes to avoid insufficient concurrent processing capabilities or excessive process context switching overhead; 5. Correctly configure Nginx cache to avoid improper cache size settings; 6. By analyzing Nginx logs, such as using awk and grep commands or ELK

Configuring an HTTPS server on a Debian system involves several steps, including installing the necessary software, generating an SSL certificate, and configuring a web server (such as Apache or Nginx) to use an SSL certificate. Here is a basic guide, assuming you are using an ApacheWeb server. 1. Install the necessary software First, make sure your system is up to date and install Apache and OpenSSL: sudoaptupdatesudoaptupgradesudoaptinsta

There are many ways to monitor the status of HDFS (Hadoop Distributed File System) on CentOS systems. This article will introduce several commonly used methods to help you choose the most suitable solution. 1. Use Hadoop’s own WebUI, Hadoop’s own Web interface to provide cluster status monitoring function. Steps: Make sure the Hadoop cluster is up and running. Access the WebUI: Enter http://:50070 (Hadoop2.x) or http://:9870 (Hadoop3.x) in your browser. The default username and password are usually hdfs/hdfs. 2. Command line tool monitoring Hadoop provides a series of command line tools to facilitate monitoring

To view the thread status in the Tomcat log, you can use the following methods: TomcatManagerWeb interface: Enter the management address of Tomcat (usually http://localhost:8080/manager) in the browser, and you can view the status of the thread pool after logging in. JMX Monitoring: Use JMX monitoring tools (such as JConsole) to connect to Tomcat's MBean server to view the status of Tomcat's thread pool. Select in JConsole

This article introduces the construction and configuration methods of Nginx. 1. Install Nginx: Use sudoyumininstallnginx on CentOS, use sudoapt-getinstallnginx on Ubuntu, and start with sudosystemctlstartnginx after installation. 2. Basic configuration: Modify the /etc/nginx/nginx.conf file, mainly modify the listen (port) and root (site root directory) instructions in the server block, and after modification, use sudosystemctlrestartnginx to restart and take effect. 3. Virtual host configuration: in nginx.co
