CHAPTER 1 INTRODUCTION (Simple web server) TO AJAX E B
CHAPTER 1 INTRODUCTION TO AJAX E B V N Figure 1-8. Apartment rentals in Montreal The generated results are perfect. As most Montreal people know, when they ask for Montreal, they mean Montreal the island, and Figure 1-8 includes only the island. Additionally, by clicking on one of the found rentals, a balloon appears that gives more details on the rental and if possible some images. The user can easily click on each found location and quickly decide whether it is of interest to them. Ajax Architecture Basics You have a quick definition and some examples that illustrate the basic ideas behind an Ajax application. The next step is to illustrate an Ajax architecture. See Figure 1-9. In Figure 1-9 there is a browser. The browser has two pieces of content: Content 1 and Content 2. Each piece of content is fetched from a different server. Content 2 is fetched from a server that also has two pieces of content, which are also retrieved from separate servers. From an architectural point of view, Ajax implements the Pipes and Filters pattern.3 3. John Vlissides et al., Pattern Languages of Program Design 2 (Boston, MA: Addison-Wesley Professional, 1996), p. 430.
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