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Chapter 26. Advanced Netscape Dynamic HT... > Different Approaches to Dynamic HTML

Different Approaches to Dynamic HTML

In Chapter 24, "Introduction to Dynamic HTML," you learned about the different claims made by Netscape and Microsoft as to what constitutes Dynamic HTML. As originally proposed, the two companies had a number of similarities and far more differences. As time has gone by, both Microsoft and Netscape have released newer versions of their browsers with greater support for Web technology standards, which has brought them closer to one another. However, with the introduction of Navigator 6, Netscape has dropped most of the proprietary and non-standard capabilities from its browser and embraced Web standards to a very high degree. Because of this, when discussing Netscape's implementation of Dynamic HTML, it is actually necessary to split the discussion between Navigator 4 and Navigator 6.

All the Internet Explorer, Navigator 4, and Navigator 6 browsers largely conform to the Cascading Style Sheets 1 (CSS1) standards for content positioning, for example, but Navigator 4 also has the non-standard <layer> element that can do many of the same things. Another difference is in the scripting language. Navigator 4 and 6 use different versions of JavaScript. Internet Explorer uses its own JScript, which is largely compatible with Netscape's JavaScript, but not completely. The latest versions of JScript and JavaScript (in Navigator 6) largely adhere to the ECMAScript standard, though some differences remain.


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