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Web Systems & Technologies
CS Prepared By: Junaid Hassan Lecturer at UOS M.B.Din Campus
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Introduction to HTTP, HTML & HTML5 tags, dynamic web content
Topics: Introduction to HTTP, HTML & HTML5 tags, dynamic web content
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Intro to HTTP: Hyper text transfer protocol is a client-server network protocol used by the World Wide Web since 1990 Request-Response protocol Browser sends request messages for images, texts, scripts, styles etc Web server respond to these request messages with requested resurce Web pages will usually generate multiple HTTP requests to load different type of data
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Important HTML Tags: <!DOCTYPE html>, <head>, <title>, <link>, <meta>, <style>, <script>, <body> <a>, <img>, <p>, <h1> - <h6>, <hr>, <br>, <ol>, <ul>, <li>,<div>, <b>, <!-- → <blockquote>, <button>, <code> <form>, <input>, <textarea>, <label>, <select> <span>, <iframe>, <em>, <abbr> <table>, <th>, <tr>, <td>, <thead>,<tfoot>
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Important HTML5 Tags: <article>, <aside>, <audio>, <video>, <bdi>, <canvas>, <details>, <dialog> <embed>, <figure>, <figcaption> <header>, <footer>, <main>, <nav>, <section>, <source> <output>, <progress>, <time> For complete list of HTML & HTML5 tags:
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Block Level vs Inline Elements:
Block level elements starts on a new line and takes up the full available width e.g <div>, <p>, <h1> - <h6> and <form> elements Inline elements only takes up as much width as necessary and does not start on a new line e.g <span>, <a>, <img> elements
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Dynamic Web Content: Page content is changed according to the dynamic requirements Dynamic web content is generated in 3 steps Data presentation (html, css, js) PHP code interpreter (web server) Fetching data from database (MySQL) Dynamic web content is generated using server side programming language PHP PHP interpreter reads the PHP code and fetches data from the database Facebook home page example
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Assignment: Define and Give Short Explanation of following: Www
Web pages Web sites Web applications TCP/IP, TCP/IP application Web services Web servers
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References: https://www.httpwatch.com/httpgallery/introduction/
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