Ajax and REST Recipes: A Problem-Solution Approach by Christian Gross

By Christian Gross

Ajax and leisure Recipes: A Problem-Solution strategy will serve your whole Ajax wishes, by means of supplying adaptable recommendations for universal initiatives you might want to enforce on websites utilizing the subsequent new release of Ajax and relaxation concepts. As a JavaScript developer, a while is valuable, so you’ll are looking to clear up difficulties that current themselves on your paintings as fast as attainable. you could decide up the code supplied during this ebook, adapt it, or plug it directly into your individual functions. The booklet ordinarily specializes in illustrating and explaining tips on how to construct purposes that use JavaScript, Ajax, and leisure net prone, besides a few person interface matters. in particular, the subsequent subject matters are coated: imposing JavaScript unit checks, explaining the motive of dynamic languages, internet companies and service-oriented structure (SOA), defining and enforcing contracts utilizing leisure, realizing why JavaScript capabilities have kingdom; imposing JavaScript "Generics", that are a combination among genuine Generics and a alternative set of rules, utilizing code blocks, utilizing features to make judgements, realizing the variation of JavaScript code that behaves like a price kind or a reference sort, enforcing proxies, delegates, mixins, and overloaded capabilities, enforcing a whole Ajax and net carrier structure, defining an online carrier utilizing relaxation, dealing with huge or gradual or real-time information units, enforcing purchasing cart kind architectures, and fixing the again button challenge utilizing Ajax. Having learn this ebook, you might have realized to modularize your net software via decoupling the buyer from the server. The decoupling permits a consumer developer to target writing the simplest JavaScript and Ajax code, and a server developer to put in writing the simplest company and information items.

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In the original PC DOS days, you would statically compile into your application all the libraries you needed. These days, you use shared libraries, which make it easy to intercept API calls, which in turn make it easy to reverse engineer any application. It is trivial. Of course, you might not care about protecting the intellectual property and might be more concerned about protecting your security. Using the proper communication channels, you can protect your security with Ajax. You can use one of two approaches: Secure Socket Layer (SSL) or a private communications channel.

Therefore, you cannot use classical user-interface testing techniques. 11 Using a utility such as JsUnit,12 you could write a series of scripts for the server side and to execute user-interface logic. The test scripts would exercise the client logic and ensure that the application works properly. However, this solution is not ideal, because any logic that is embedded into the DHTML is not tested, so errors could potentially occur. 11. com/msdnmag/issues/06/08/DesignPatterns/). html), and the reader is expected to investigate which is best for them.

Again, in this test example, the internal state of the HTML page is used to perform a verification. Many programmers would consider this a fragile test, because you could easily change the variable name and break the test. This is correct, but when using test-driven development, it quickly becomes obvious that a test is not working. testVerifyCalculation()", 4000); } The test addition of two numbers has two functions because of the way an addition is performed. A user would enter two numbers into the text boxes of Figure 1-18 and then click the Add Two Numbers button.

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