HTML5 Cookbook (O'Reilly Cookbooks) by Christopher Schmitt

By Christopher Schmitt

With ratings of functional recipes you should use on your tasks without delay, this cookbook is helping you achieve hands-on adventure with HTML5’s flexible number of parts. You get transparent options for dealing with matters with every little thing from markup semantics, net kinds, and audio and video components to similar applied sciences equivalent to geolocation and wealthy JavaScript APIs. each one informative recipe contains pattern code and an in depth dialogue on why and the way the answer works. excellent for intermediate to complex net and cellular internet builders, this useful booklet enables you to pick out the HTML5 gains that paintings for you—and is helping you scan with the rest.Test browsers for HTML5 help, and use options for utilising unsupported positive aspects detect how HTML5 makes net shape implementation a lot easier triumph over demanding situations for imposing local audio and video components study recommendations for utilizing HTML5 with ARIA accessibility instructions discover examples that hide utilizing geolocation information on your functions Draw photos, use transparencies, upload gradients and styles, and extra with Canvas deliver HTML5 good points to lifestyles with numerous complex JavaScript APIs

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Sample text

This means implementing HTML5 is difficult, as Internet Explorer won’t render any CSS that you apply to these new elements. net/blog/2008/01/22/Best-Standards-Support#c1201006277) and known as the shim technique, involves creating a DOM element of the same name as the HTML5 element that you want to use. Once you create this element, Internet Explorer will apply CSS to it. html">Home

href="/about/">About

href="/blog/">Blog

href="/contact/">Contact Me

and then style these elements: header { width: 600px; height: 25px; background-color: #ccffff; border: 2px solid #66cc99; padding: 10px; } nav { width: 100%; float: left; list-style: none; } nav li { float: left; padding-right: 7px; } When we view this page in Internet Explorer 8 or below (as shown in Figure 2-2), the CSS is not applied.

18 Controlling the Numbering of Your Lists Problem You want an ordered list to have numbering different than the default of starting with 1. Solution Specify one of the semantic control attributes on the ol or li. 18 Controlling the Numbering of Your Lists | 25 Figure 1-9. 0 Discussion start has been around for a while, but was deprecated as presentational. HTML5 now recognizes the semantic value of controlled numbering and welcomes it back. This “reordering” via start works the same across all browsers, IE6 included.

This “reordering” via start works the same across all browsers, IE6 included. , for a countdown from 10):

  1. Apples
  2. Oranges
  3. Bananas

Unfortunately, none of the current browsers support this attribute yet.

  1. Bananas
  2. Oranges
  3. Apples

26 | Chapter 1: Fundamental Syntax and Semantics All current browsers support the value attribute for li. Figure 1-10. html#the-ol-element. 19 Hiding Content to Show Later Problem You have content that you want to hide until after a user logs in.

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