CHAPTER 4
JavaScript Primer
jQuery is a JavaScript library that you add to your HTML documents and that is executed by a browser. You employ the features of the jQuery library by adding your own code to the document as well – and this requires a basic understanding of how to write JavaScript. In this chapter, I provide a primer for the JavaScript language, focusing on the features that are most pertinent when working with jQuery.
JavaScript has a mixed reputation as a programming language. It is true that JavaScript has had a difficult life and was rushed through standardization before it had a chance to mature properly, leaving some oddities ...
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