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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Join the UiPath Community Berlin (Virtual) meetup on May 27 to discover handy Studio Tips & Tricks and get introduced to UiPath Insights. Learn how to boost your development workflow, improve efficiency, and gain visibility into your automation performance. 📕 Agenda: - Welcome & Introductions - UiPath Studio Tips & Tricks for Efficient Development - Best Practices for Workflow Design - Introduction to UiPath Insights - Creating Dashboards & Tracking KPIs (Demo) - Q&A and Open Discussion Perfect for developers, analysts, and automation enthusiasts! This session streamed live on May 27, 18:00 CET. Check out all our upcoming UiPath Community sessions at: 👉 https://community.uipath.com/events/ Join our UiPath Community Berlin chapter: 👉 https://community.uipath.com/berlin/

Nix(OS) for Python Developers - PyCon 25 (Bologna, Italia)Peter Bittner

How do you onboard new colleagues in 2025? How long does it take? Would you love a standardized setup under version control that everyone can customize for themselves? A stable desktop setup, reinstalled in just minutes. It can be done. This talk was given in Italian, 29 May 2025, at PyCon 25, Bologna, Italy. All slides are provided in English. Original slides at https://slides.com/bittner/pycon25-nixos-for-python-developers