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140 ” CSS Selector Libraries U n l i k ethe others, however, it does not implement a CSS selector parser in order to offer related functionality. Instead, it does so programmatically through its API. F o r example, rather than passing the name of an element (say div) to a central query method, an element() method accepts the name of an element for which to query. Though this makes it a bit less concise than other libraries, it also makes it more expressive and only requires a basic knowledge of DOM concepts in order to operate it. It can be downloaded at http://github.com/elazar/domquery/tree/master. The central class DOMQuery is documented using phpDoc-compatible API docblocks and the unit test suite offers use cases for each of the available methods. W r a p - U p This concludes the current chapter. Y o should u come away from reading it with knowledge of the pros and cons of using CSS selector-based libraries and situations where their use is appropriate, specific CSS selectors and possible equivalents for them in XPath, and particular library implementations to consider.
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vi ” CONTENTS Referring URLs . .
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Chapter 1 Introduction If you are l
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Introduction ” 3 in some instance
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Introduction ” 5 • Chapters 3-7
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8 ” HTTP R equests The HTTP proto
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HTTP Streams W rapper ” 29 Let
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HTTP Streams W rapper ” 33 ); ?>
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