HTML Uniform Resource Locators

URL is a web page address.

The URL can consist of letters, such as "W3CSchools.cc", or an Internet Protocol (IP) address: 192.68.20.50. Most people use the domain name to access a website because names are easier to remember than numbers.

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URL - Uniform Resource Locator

A web browser requests a page from a web server via a URL.

When you click a link in an HTML page, the corresponding tag points to an address on the World Wide Web.

A Uniform Resource Locator (URL) used to locate documents on the World Wide Web.

An example of a web page address://m.sbmmt.com/html/html-url.html

Grammar rules

scheme://host.domain:port/path/filename

Description:

• scheme - Defines the type of Internet service. The most common type is http

• host - defines the domain host (the default host for http is www)

• domain - defines the Internet domain name, e.g. w3cschool.cc

• :port - Define the port number on the host (the default port number for http is 80)

• path - Define the port number on the server The path to (if omitted, the document must be located in the root directory of the website).

• filename - defines the name of the document/resource

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Common URL Schemes

The following are some URL schemes:

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URL Character Encoding

URL can only use theASCIIcharacter set.

to pass through the Internet to send. Because URLs often contain characters outside the ASCII set, the URL must be converted to valid ASCII format.

URL encoding uses "%" followed by two hexadecimal digits to replace non-ASCII characters.

URL cannot contain spaces. URL encoding usually uses + to replace spaces.

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URL encoding example

## http Hypertext Transfer Protocol Starts with http:// Ordinary web page. No encryption. https Secure Hypertext Transfer Protocol Secure web page, encrypts all information exchanged. ftp File Transfer Protocol is used to download or upload files to the website. file A file on your computer.

chemes	Visit	Used for

## ## £ %A3 © %A9 %AE

##Characters	URL Encoding
## ®
## ## %C1 %C2 %C3 ## Ä À %C0 Á Â Ã %C4 Å For a complete URL encoding reference, please visit our URL Encoding Reference Manual. %C5 Continuing Learning || new file HTML 统一资源定位器(Uniform Resource Locators) submit Reset Code Automatic operation Previous section Next Section Tutorial List get help Course Recommendations Courseware download IntermediateFront-end Vue3 actual combat [handwritten vue project] 2857 people are watching ElementaryAPIPOST tutorial [Popularization of technical concepts related to network communication] 1795 people are watching IntermediateIssue 22_Comprehensive actual combat 5521 people are watching ElementaryIssue 22_PHP Programming 5172 people are watching ElementaryIssue 22_Front-end development 8713 people are watching IntermediateBig data (MySQL) video tutorial full version 4525 people are watching ElementaryGo language tutorial-full of practical information and no nonsense 2794 people are watching ElementaryGO Language Core Programming Course 2814 people are watching IntermediateJS advanced and BootStrap learning 2563 people are watching IntermediateSQL optimization and troubleshooting (MySQL version) 3374 people are watching IntermediateRedis+MySQL database interview tutorial 2963 people are watching ElementaryDeliver food or learn programming? 5708 people are watching The courseware is not available for download at the moment. The staff is currently organizing it. Please pay more attention to this course in the future~ Students who have watched this course are also learning 490979 plays Let's briefly talk about starting a business in PHP Quick introduction to web front-end development Large-scale practical Tianlongbabu development of Mini version MVC framework imitating the encyclopedia website of embarrassing things Getting Started with PHP Practical Development: PHP Quick Creation [Small Business Forum] Login verification and classic message board Computer network knowledge collection Quick Start Node.JS Full Version The front-end course that understands you best: HTML5/CSS3/ES6/NPM/Vue/...[Original] Write your own PHP MVC framework (40 chapters in depth/big details/must read for newbies to advance) notes X About us Disclaimer Sitemap php.cn：Public welfare online PHP training，Help PHP learners grow quickly！