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

By Christian Gross

Ajax and relaxation Recipes: A Problem-Solution technique will serve your entire Ajax wishes, by way of delivering adaptable ideas for universal projects you need to enforce on sites utilizing the following new release of Ajax and relaxation thoughts. As a JavaScript developer, it slow is important, so you’ll are looking to resolve 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 ebook in most cases specializes in illustrating and explaining the best way to construct purposes that use JavaScript, Ajax, and leisure internet providers, besides a few consumer interface matters. particularly, the next issues are lined: enforcing JavaScript unit checks, explaining the purpose of dynamic languages, net companies and service-oriented structure (SOA), defining and enforcing contracts utilizing relaxation, realizing why JavaScript capabilities have nation; imposing JavaScript "Generics", that are a combination among actual Generics and a substitute set of rules, utilizing code blocks, utilizing services to make judgements, realizing the variation of JavaScript code that behaves like a price kind or a reference style, imposing proxies, delegates, mixins, and overloaded features, imposing a whole Ajax and net carrier structure, defining an online provider utilizing relaxation, dealing with huge or gradual or real-time information units, imposing purchasing cart style architectures, and fixing the again button challenge utilizing Ajax. Having learn this e-book, you've realized to modularize your net program via decoupling the customer from the server. The decoupling permits a shopper developer to target writing the easiest JavaScript and Ajax code, and a server developer to jot down the easiest company and information items.

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In most cases, the request is tested using a file, and the response is based on another file. • If you must implement logic in the Mock URL layer, make sure that it’s extremely well tested and stable, as that implementation will serve as a reference for how the contract between the client and server functions. • The client-side tests that test the contract represent an implementation of how to use the contract and are used to verify the correctness of the server-side implementation. • You develop the client-side contract tests and Mock URL layer together using testdriven development techniques.

Qxd 11/17/06 10:31 AM Page 33 CHAPTER 1 ■ GETTING STARTED you could implement it within seconds. However, there are more complicated cases, so you shouldn’t be tempted to provide a solution. The focus of the Mock URL layer is to provide correct requests and responses for specific tests. By implementing logic, you’re setting yourself up for an error because the logic needs to be tested. Let’s put it this way: Imagine implementing the trivial addition of two numbers. How do you know that your implementation will work properly?

When writing Ajax and REST code, use the following rule of thumb: use asynchronous requests for applications, and use synchronous requests for testing. Getting back to the example function testPrototype, each test function must indicate whether or not the test was successful. This is required because when the test manager runs all tests, the next test will run only when the current test was successful. success is called. Calling the method failed indicates a failure, and the method waiting indicates that the test involves multiple steps and needs to wait for an answer before determining success or failure.

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