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Mastering JavaScript

You're reading from   Mastering JavaScript Explore and master modern JavaScript techniques in order to build large-scale web applications

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Product type Paperback
Published in Jan 2016
Publisher
ISBN-13 9781785281341
Length 250 pages
Edition 1st Edition
Languages
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Author (1):
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Ved Antani Ved Antani
Author Profile Icon Ved Antani
Ved Antani
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Toc

Table of Contents (11) Chapters Close

Preface 1. JavaScript Primer FREE CHAPTER 2. Functions, Closures, and Modules 3. Data Structures and Manipulation 4. Object-Oriented JavaScript 5. JavaScript Patterns 6. Testing and Debugging 7. ECMAScript 6 8. DOM Manipulation and Events 9. Server-Side JavaScript Index

Beginning and end


Frequently, we may wish to ensure that a pattern matches at the beginning of a string or perhaps at the end of a string. The caret character, when used as the first character of the RegEx, anchors the match at the beginning of the string such that /^test/ matches only if the test substring appears at the beginning of the string being matched. Similarly, the dollar sign ($) signifies that the pattern must appear at the end of the string: /test$/.

Using both ^ and $ indicates that the specified pattern must encompass the entire candidate string: /^test$/.

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