Html5 storage and browser storage
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This document discusses HTML5 storage options for web applications, including their advantages and limitations. It covers technologies like cookies, userData, Local Shared Objects, and Gears, but recommends using HTML5 storage features like localStorage, IndexedDB, and an offline cache manifest. These new features allow for more storage space on the client side without HTTP requests, and facilitate offline web applications, though browser support and storage limits remain issues.
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The slides from the HTML5 talk I presented on Wednesday October 18th at the DevelopMentor offices in London.
HTML5 Technical Executive Summary
HTML5 is the latest evolution of the HTML standard and includes new elements, JavaScript APIs, and CSS features. It allows building richer web applications that work across browsers and devices without needing plugins like Flash. While support for HTML5 features is improving, the specification continues to evolve and not all browsers fully support all parts of HTML5 yet. Developing with HTML5 requires considering cross-browser compatibility and supporting different content formats. Overall, HTML5 provides opportunities for building richer applications on the web and on mobile, but full standardization and implementation is still ongoing.
Html 5 - What's new?
HTML5 is the newest hyper text markup language for websites from the World Wide Web Consortium (W3C).
5. HTML5
The document discusses the history and features of HTML5. It began development in 2008 by the W3C and WHATWG to address key challenges for developers. HTML5 adds new elements, attributes, and APIs to support graphics, location data, storage, and improved JavaScript performance. It also defines tags for embedding video, audio, and other media. While still a work in progress, major browsers now support many HTML5 features.
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Html5
HTML5 introduces several new features including new semantic elements, support for embedded video and audio, canvas element for 2D/3D graphics, offline web applications, and drag and drop. It also removes some older HTML elements. HTML5 is still a work in progress but is supported by all major browsers. It aims to make web pages more compatible with new technologies and reduce the need for browser plug-ins.
Html5 workshop part 1
HTML5 is the new standard for HTML that provides many new features and capabilities. It is a collaboration between the W3C and WHATWG to develop the next generation of HTML. Some key features of HTML5 include new multimedia elements like <video> and <audio>, local storage options, offline capabilities, and improved graphics capabilities. HTML5 aims to make web development easier across browsers and devices with a single code base.
High Performance Web Pages - 20 new best practices
The document discusses best practices for improving web page performance. It begins by noting how slow pages negatively impact user experience and business metrics. It then outlines 14 best practices such as minimizing HTTP requests, using a content delivery network, gzipping components, optimizing images, and avoiding redirects. Additional best practices are also provided such as preloading components, minimizing DOM access, and keeping components under 25kb. Tools for measuring performance are also mentioned.
HTML5 Data Storage
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Top 10 HTML5 Features for Oracle Cloud Developers
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HTML5 Presentation
This document discusses the history and evolution of HTML standards from 1991 to 2009. It outlines the major releases of HTML and related technologies like CSS and JavaScript. It then describes some of the new features introduced in HTML5, including new multimedia elements like <video> and <audio>, the canvas element for drawing graphics, storage APIs, and various form input types. The document concludes that HTML5 introduces significant improvements over HTML4, bringing multimedia, threads, drag and drop, and persistent storage without additional plugins. While still a work in progress, modern browsers already support many HTML5 features.
Front-end performances
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Les slides de sa présentation exposant quelques spécificités liées à eZ Publish sont disponibles ici.
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Html5 storage and browser storage
- 1. HTML5 Storage and Local Storage Sway Deng(@swaydeng) 2011-1-14
- 3. Cookie is our favorite, but……
- 4. Cookies: The size of storage space is small The number of key-value pair is limited are included with every HTTP request, slowing down web apps.
- 5. What we need: A lot of storage space On the client,not included with every HTTP request That persists beyond a page refresh
- 6. What we already have: userData(IE) Local Shared Objects(Adobe) Gears(Google)
- 7. userData Some code source…
- 8. userData available only in the same directory and with the same protocolno allowance for increasing space Depends on security settings
- 10. Local Shared Objects Customize storage space（default:100K） Same domain Cross-browser
- 12. But Google has say goodbye to Gears HTML5 is more attractive Gears is not that popular We don’t need a duplicate
- 13. HTML5 Storage
- 14. Web Storage Web Storage support
- 15. Web Storage interface Storage { readonly unsigned long length; DOMString key(index); any getItem(key); void setItem(key, value); void removeItem(key); void clear(); };
- 16. Web Storage
- 17. Web Storage Remove data
- 18. Web Storage Storage event sessionStorage Limitations(permission,storage space)
- 19. Web SQL Database Web SQL Database support
- 20. Web SQL Database Three core methods: openDatabase transaction (?) executeSql Demo
- 21. Web SQL Database Why Web SQL DB is going to die? Browser vendors don’t support it widely Inelegant solution The specification is illegible A better solution is already there
- 22. Indexed Database Object based storage NoSQL-Style(structured storage) asynchronous APIs (synchronous APIs later)
- 23. Open and set up a DB
- 24. Store data in DB
- 25. Indexed Database Can we use now ? The answer is No! But it is coming soon
- 26. Indexed Database
- 27. Offline Web Applications A solution for offline web apps demo
- 28. Offline Web Applications Server side addType text/cache-manifest .manifest Client side CACHE MANIFEST # revision 630 ../halma-localstorage.js css/layout.css images/sofish.png NETWORK: # assets that available only when online: sample.json FALLBACK: notfound.html <!DOCTYPE html> <html manifest="sample.manifest">
- 29. Offline Web Applications Event online offline
- 30. Usage Customize your web(like customize google menu，store large numbers of video list etc.) Cache static assets（css,js,images）
- 31. Problem Security Storage space management
- 32. The end