Preface
JavaScript is a very powerful, versatile, and ubiquitous programming language. From humble beginnings in the mid-1990s as Netscape's foil to Microsoft's Visual Basic, it's grown to be one of the world's most popular programming languages.
JavaScript is unique among programming languages because it's the only one deployed on practically all personal computers around the world. All modern web browsers implement JavaScript. It's the de facto scripting language for the Web. While it started out as a simple language used for validating forms and minimally manipulating some content in the page, it's evolved to let you build rich client-side applications. What's more, over the years, JavaScript has even begun to supplant Flash to some degree. ...
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