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Asked: 2026-05-13T07:41:42+00:00

I have seen HTML 5 coming up in near future. How does it differ

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I have seen HTML 5 coming up in near future. How does it differ from HTML 4, which has been ‘in’ for so many years in web development?

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  1. Editorial Team

    Broadly speaking, there are four main areas of change:

    • Semantic markup, including the following tags:

      <section>
      <article>
      <header>
      <footer>
      <nav>
      <aside>
      <hgroup>

      This also covers changes to the <doctype>, <html> and <meta> tags, as well as link relations (the rel attribute on an <a> tag).

    • Improved form support – mainly semantic additions to input types, and a few neat things like field autofocus and placeholder text.

    • Multimedia tags – <video>, <audio> and <canvas>. <video> and <audio> are intended to improved better support for embedded media in the page; <canvas> is for programmatic two-dimensional bitmap drawing on the page through JavaScript.

    • Changes to the DOM that are just accessible through JS – navigator.geolocation, window.localStorage (storing user data offline), window.applicationCache (storing app data offline), web workers (multithreaded JavaScript, with some caveats)

    Different parts of HTML are in different stages of specification and implementation – the form changes are poorly supported outside of Safari, the <video> tag is basically unusable in a cross-platform environment (without multiple video formats), and IE has built-in support for next to none of these changes.

    The best place to read up on HTML5 that I’ve seen is Mark Pilgrim’s excellent book in progress, Dive into HTML5

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