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Prototype: Easing AJAX`s Pain
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04/05/2006, By Bruce Perry
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This article describes Prototype, an open source JavaScript library to create an object for an AJAX application. I explain how to use Prototype by describing an environmentally oriented web application that displays an annual atmospheric carbon dioxide (CO2) level. First, I will discuss Prototype's benefits and describe how to set up Prototype in your application. Second, I will delve into the nitty-gritty of how this application puts the library to good practical use.
Why Prototype?
Why didn't I just create a plain old JavaScript object (POJO) for my application, instead of introducing an open source library? For one, Prototype includes a nifty collection of JavaScript shortcuts that reduce typing and help avoid the reinvention of the wheel. The commonly touted shortcut is $("mydiv"), which is a Prototype function that returns a Document Object Model (DOM) Element associated with the HTML tag with id "mydiv". That sort of concision alone is probably worth the cost of setting up Prototype.
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