About HTML URL Encode

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🔷 About HTML URL Encode A Thread🧵 👇

📌 HTML URL → What is URL? • URL stands for Uniform Resource Locator. • A URL is another word for a web address. • A URL can be composed of words (e.g. example.com/index.html) or an Internet Protocol (IP) address (e.g. 192.68.20.50).

• Web browsers request pages from web servers by using a URL. • A Uniform Resource Locator (URL) is used to address a document (or other data) on the web.

📌 URL Syntax

→ Explanation- • scheme - defines the type of Internet service (most common is http or https) • prefix - defines a domain prefix (default for http is www) • domain - defines the Internet domain name (like example.com/index.html)

• port - defines the port number at the host (default for http is 80) • path - defines a path at the server (If omitted: the root directory of the site) • filename - defines the name of a document or resource

📌 Different URL Schemes → The following table lists some different schemes used in URL with their uses. • Scheme: http - HyperText Transfer Protocol • Used for - Common web pages. Not encrypted.

• Scheme: https - Secure HyperText Transfer Protocol • Used for - Secure web pages. Encrypted • Scheme: ftp - File Transfer Protocol • Used for - Downloading or uploading files • Scheme: file • Used for - A file on your computer

📌 URL Encoding → URLs can only be sent over the Internet using the ASCII character-set. → If a URL contains characters outside the ASCII set, the URL has to be converted.

→ URL encoding converts non-ASCII characters into a format that can be transmitted over the Internet. → URL encoding replaces non-ASCII characters with a "%" followed by hexadecimal digits.

→ URLs cannot contain spaces. URL encoding normally replaces a space with a plus (+) sign, or %20.

📌 URL Encoding Functions → In JavaScript, PHP, and ASP there are functions that can be used to URL encode a string. → PHP has the rawurlencode() function, and ASP has the Server.URLEncode() function. → In JavaScript you can use the encodeURIComponent() function.

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