JavaScript regular expression

Dec 7, 20142 likes4,562 views

Presentation used to give an introduction to Regular Expression in JavaScript at MercadoLibre Inc. Spanish: https://www.youtube.com/watch?v=skG03rdOhpo

GETTING STARTED
JavaScript Regular Expression
REFERENCES
Douglas Crockford, JavaScript: The Good Parts
Jan Goyvaerts and Steven Levithan, Regular Expression Cookbook
Stoyan Stefanov, Object-Oriented JavaScript

INTRODUCTION
• A regular expression is a specific kind of text pattern.
• JavaScript’s Regular Expression feature was borrowed from Perl.
• You can use it with many methods:
• match, replace, search, split in strings
• exec, test in regular expresion object

CONSTRUCTOR
var re = new RegExp(pattern);

CONSTRUCTOR
var re = new RegExp(pattern, flags);

$METACHARACTERS / [] - {} () | . * + ? ^ $$

$START LINE / [] - {} () | . * + ? ^ $$

$END LINE / [] - {} () | . * + ? ^ $$

$ANY CHARACTER EXCEPT END LINE / [] - {} () | . * + ? ^ $$

$CHOICE / [] - {} () | . * + ? ^ $$

$ESCAPE / [] - {} () | . * + ? ^ $$

$GROUP / [] - {} () | . * + ? ^ $$

$CLASS / [] - {} () | . * + ? ^ $$

$QUANTIFIERS / [] - {} () | . * + ? ^ $$

$QUANTIFIER - OPTIONAL / [] - {} () | . * + ? ^ $$

$QUANTIFIER - ZERO OR MORE / [] - {} () | . * + ? ^ $$

$QUANTIFIER - ONE OR MORE / [] - {} () | . * + ? ^ $$

$QUANTIFIER - RANGE / [] - {} () | . * + ? ^ $$

$METACHARACTERS / [] - {} () | . * + ? ^ $$

$START LINE / [] - {} () | . * + ? ^ $$

$END LINE / [] - {} () | . * + ? ^ $$

$ANY CHARACTER EXCEPT END LINE / [] - {} () | . * + ? ^ $$

$CHOICE / [] - {} () | . * + ? ^ $$

$ESCAPE / [] - {} () | . * + ? ^ $$

$GROUP / [] - {} () | . * + ? ^ $$

$CLASS / [] - {} () | . * + ? ^ $$

$QUANTIFIERS / [] - {} () | . * + ? ^ $$

$QUANTIFIER - OPTIONAL / [] - {} () | . * + ? ^ $$

$QUANTIFIER - ZERO OR MORE / [] - {} () | . * + ? ^ $$

$QUANTIFIER - ONE OR MORE / [] - {} () | . * + ? ^ $$

$QUANTIFIER - RANGE / [] - {} () | . * + ? ^ $$

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