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A New Approach to Web Applications – Ajax (Asynchronous JavaScript and XML)

Defining Ajax Ajax isn’t a technology. It’s really several technologies, each flourishing in its own right, coming together in powerful new ways. Ajax incorporates: standards-based presentation using XHTML and CSS; dynamic display and interaction using the Document Object Model; data interchange and manipulation using XML and XSLT; asynchronous data retrieval using XMLHttpRequest; and JavaScript binding…

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JavaScript Security Restrictions

As JavaScript operates within the realm of highly sensitive data and programs, its capabilities have been restricted to ensure that it can’t be used maliciously. As such, there are many things that JavaScript simply is not allowed to do. For example, it cannot read most system settings from your computer, interact directly with your hardware,…

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JavaScript’s Limitations

JavaScript is most commonly used as a client-side language, and in this case the “client” refers to the end-user’s web browser, in which JavaScript is interpreted and run. This distinguishes it from server-side languages like PHP and ASP, which run on the server and send static data to the client.Since JavaScript does not have access…

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JavaScript Defined

JavaScript is a scripting language that’s used to add interactivity and dynamic behaviors to web pages and applications. JavaScript can interact with other components of a web page, such as HTML and CSS, to make them change in real time, or respond to user events.You’ll undoubtedly have seen JavaScript in the source code of web…

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