Cross-Browser Dynamic HTML Issues (Web site domain) Level 4 browsers and
Cross-Browser Dynamic HTML Issues Level 4 browsers and later NN4+ and IE4+ were the first browsers to include World Wide Web technologies that gave page authors far more control over the display and interactive behavior of Web page content. Lumped together under the heading of Dynamic HTML (DHTML), these technologies dramatically extended the simple formatting of standard HTML that page authors had used for years. These days, scripters and designers coming to Web development for the first time take DHTML capabilities for granted; they are probably unaware that plain ol HTML is little more than a specification to format static text and images on a page. A lot of what the user gets with DHTML had previously been accomplished only via Java applets and plug-ins, such as Shockwave. Not that DHTML eliminates these technologies from the Web author s arsenal (DHTML doesn t do sound or video, for example), but because DHTML can accomplish much more of what authors look for in assembling page content and layout without the long downloads of applets or plug- in content, it becomes an attractive way for nonprogrammers to spice up Web applications. Perhaps categorizing DHTML authors as nonprogrammers is not quite right. DHTML also adds significantly to the vocabulary required to incorporate dynamic content into pages. Suddenly HTML becomes a lot more programming than simply adding tags to existing content. And if you want to do dynamic positioning of elements, be prepared to put your JavaScript skills to use. What Is DHTML? You can practically find as many definitions of Dynamic HTML as there are people to ask. This is especially true if you ask Netscape and Microsoft. Each company defines DHTML in 47 CHAPTER …. In This Chapter Introducing Dynamic HTML The common denominator of DHTML functionality across browsers Upgrading to modern compatibility techniques ….
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