Flagrant Badassery

本頁 50 篇

• Oniguruma-To-ES: Translate Oniguruma regexes to native JavaScript

  • #JavaScript
  • #Project Releases
  • #Regular Expressions

  A couple months ago I launched a new open source project, Oniguruma-To-ES. You can use it to: Take advantage of Oniguruma's many extended regex features in JavaScript. Run regexes written for Oniguruma from JavaScript, such as those used in TextMate grammars (used by VS Code, Shiki syntax highlighter, etc.). Share regexes across your Ruby and … Continue reading Oniguruma-To-ES: Translate Oniguruma regexes to native JavaScript

  2024/12/30 01:42Steven Levithanhttps://blog.stevenlevithan.com/archives/oniguruma-to-javascript

• Regexes Got Good: The History and Future of Regular Expressions in JavaScript

  • #JavaScript
  • #Regular Expressions

  Over at Smashing Magazine, I just published a 3,100-word (no fluff) article evaluating the history, present state, and future of regexes in JavaScript, with lots of tips. I think all JavaScript developers will learn something from this, and I'd love to know what was new for you! Check it out: Regexes Got Good: The History … Continue reading Regexes Got Good: The History and Future of Regular Expressions in JavaScript

  2024/8/21 07:07Steven Levithanhttps://blog.stevenlevithan.com/archives/regexes-got-good

• Launching: Regex+ and Regex Colorizer v1

  • #JavaScript
  • #Project Releases
  • #Regular Expressions

  I've recently released two new open source regex libraries. Regex+ Regex+ provides a regex template tag for dynamically creating readable, high performance, native JavaScript regular expressions with best practices built-in and powerful/advanced features that improve performance, readability, and maintainability. It's lightweight and supports all ES2025 regex features. Highlights include support for free-spacing and comments, atomic … Continue reading Launching: Regex+ and Regex Colorizer v1

  2024/6/6 23:25Steven Levithanhttps://blog.stevenlevithan.com/archives/new-regex-libraries

• Awesome Regex: The best regex resources for all major regex flavors

  • #Project Releases
  • #Regular Expressions

  I created a curated list on GitHub of the best regular expression tools, tutorials, libraries, and many other resources. It covers all major regex flavors, and currently includes especially deep coverage of regular expressions in JavaScript (including a concise history of all regex features added to JavaScript in ES6 through ES2024, plus active proposals for … Continue reading Awesome Regex: The best regex resources for all major regex flavors

  2024/5/8 21:07Steven Levithanhttps://blog.stevenlevithan.com/archives/awesome-regex

• parseUri 2.0: A mighty but tiny URI parser

  • #JavaScript
  • #Project Releases
  • #parseuri
  • #uri

  I created parseUri v1 17 years ago, but never hosted it on GitHub/npm because it's older than both of those tools. Nevertheless, it’s been used very widely ever since due to it being tiny and predating JavaScript’s built-in URL constructor. After this short gap, I just released v2: github.com/slevithan/parseuri. It’s still tiny (nothing similar comes … Continue reading parseUri 2.0: A mighty but tiny URI parser

  2024/4/6 06:26Steven Levithanhttps://blog.stevenlevithan.com/archives/parseuri-2

• Regex & Facebook Experience Tech Talk

  I recently gave a talk for a group of university students studying web development in Belgrade, Serbia. In it, I talked about my background, my experience starting in tech and eventually working at Facebook for seven years, and (most relevant to this blog) I spent about 20 minutes showing off some cool and advanced regular … Continue reading Regex & Facebook Experience Tech Talk

  2021/11/16 07:03Steven Levithanhttps://blog.stevenlevithan.com/archives/regex-tech-talk

• New Blog ‘Lifecurious’ at slev.life

  Flagrant Badassery has been pretty quiet for years now, but it's still my home for all things JavaScript and regular expression related. That said, I've just launched a shiny new blog where I'm posting about everything unrelated to programming. Want to learn about aphantasia and hyperphantasia, the time I unmasked cult leader Karen Zerby, why … Continue reading New Blog ‘Lifecurious’ at slev.life

  2021/2/27 07:01Steven Levithanhttps://blog.stevenlevithan.com/archives/new-blog-at-slev-life

• XRegExp 3.0.0!

  After 3+ years, XRegExp 3.0.0 has been released. Standout features are dramatically better performance (many common operations are 2x to 50x faster) and support for full 21-bit Unicode (thanks to Mathias Bynens). I’ve also just finished updating all the documentation on xregexp.com so go check that out. 🙂 If you haven’t used XRegExp before, it’s … Continue reading XRegExp 3.0.0!

  2015/9/24 18:18Steven Levithanhttps://blog.stevenlevithan.com/archives/xregexp-3-0-0

• Regex Cookbook 2nd Edition Contest Winners

  For the last six days, I've been running a contest on my blog to win one of 15 free copies of Regular Expressions Cookbook, 2nd Edition. Thanks to all who participated and spread the word! I've read every one of your comments, and appreciate the congratulations and the great comments about the first edition, etc. … Continue reading Regex Cookbook 2nd Edition Contest Winners

  2012/9/9 00:10Steven Levithanhttps://blog.stevenlevithan.com/archives/regex-cookbook-winners

• Win a Free Copy of Regex Cookbook 2nd Edition

  Update: This contest is now finished. See the list of winners. I'm excited to announce the release of Regular Expressions Cookbook 2nd Edition, which I wrote together with regex superguru Jan Goyvaerts. It has actually been available as an ebook for a couple weeks on oreilly.com, but as of now, it is also in stock … Continue reading Win a Free Copy of Regex Cookbook 2nd Edition

  2012/9/2 13:25Steven Levithanhttps://blog.stevenlevithan.com/archives/regex-cookbook-v2

• JavaScript Regex Lookbehind Redux

  Five years ago I posted Mimicking Lookbehind in JavaScript on this blog, wherein I detailed several ways to emulate positive and negative lookbehind in JavaScript. My approaches back then were all fairly rough, and it was complicated to properly customize any of them to work with a given pattern. Plus, they were only designed to … Continue reading JavaScript Regex Lookbehind Redux

  2012/4/16 10:09Steven Levithanhttps://blog.stevenlevithan.com/archives/javascript-regex-lookbehind

• Creating Grammatical Regexes Using XRegExp.build

  Recently, I've added three new addons for XRegExp v2.0 (currently in release candidate stage on GitHub): XRegExp.build — Lets you build regexes using named subpatterns. Inspired by Lea Verou's RegExp.create. XRegExp Prototype Methods — Adds a collection of methods to be inherited by XRegExp regexes: apply, call, forEach, globalize, xexec, and xtest. These also work … Continue reading Creating Grammatical Regexes Using XRegExp.build

  2012/4/5 01:00Steven Levithanhttps://blog.stevenlevithan.com/archives/grammatical-patterns-xregexp-build

• Ideas for Regular Expressions Cookbook Second Edition

  I'm happy to report that work is underway by Jan Goyvaerts and me on the second edition of Regular Expressions Cookbook. In the new edition, we'll be fixing all known errata, improving existing content, updating everything to support the latest versions of the book's eight covered programming languages, and sprinkling several new recipes into existing … Continue reading Ideas for Regular Expressions Cookbook Second Edition

  2012/3/2 18:07Steven Levithanhttps://blog.stevenlevithan.com/archives/regex-cookbook-2-suggestions

• XRegExp Updates

  A few days ago, I posted a long-overdue XRegExp bug fix release (version 1.5.1). This was mainly to address an IE issue that a number of people have written to me and blogged about. Specifically, RegExp.prototype.exec no longer throws an error in IE when it is simultaneously provided a nonstring argument and called on a … Continue reading XRegExp Updates

  2012/2/26 06:55Steven Levithanhttps://blog.stevenlevithan.com/archives/xregexp-updates

• Regex Syntax Highlighter

  Do you regularly post regular expressions online? Have you seen the regex syntax highlighting in RegexPal, RegexBuddy, or on my blog (example), and wanted to apply it to your own websites? Prompted by blog reader Mark McDonnell, I've extracted the regex syntax highlighting engine built into RegexPal and made it into its own library, unimaginatively … Continue reading Regex Syntax Highlighter

  2010/7/5 16:55Steven Levithanhttps://blog.stevenlevithan.com/archives/regex-syntax-highlighter

• What the JavaScript RegExp API Got Wrong, & How to Fix It

  Over the last few years, I've occasionally commented on JavaScript's RegExp API, syntax, and behavior on the ES-Discuss mailing list. Recently, JavaScript inventor Brendan Eich suggested that, in order to get more discussion going, I write up a list of regex changes to consider for future ECMAScript standards (or as he humorously put it, have … Continue reading What the JavaScript RegExp API Got Wrong, & How to Fix It

  2010/3/1 16:43Steven Levithanhttps://blog.stevenlevithan.com/archives/fixing-javascript-regexp

• ‘Regular Expressions Cookbook’ Giveaway on Jan Goyvaerts’s Regex Guru

  If you're not already a subscriber, check out Regex Guru, an excellent blog on all things regex by Jan Goyvaerts (coauthor of Regular Expressions Cookbook and creator of regular-expressions.info, RegexBuddy, PowerGREP, and RegexMagic). Now's a better time than ever to check out the site since he's giving away five copies of Regular Expressions Cookbook; just … Continue reading ‘Regular Expressions Cookbook’ Giveaway on Jan Goyvaerts’s Regex Guru

  2010/2/18 21:24Steven Levithanhttps://blog.stevenlevithan.com/archives/regular-expressions-cookbook-giveaway-on-jan-goyvaerts-regex-guru

• Validate Phone Numbers: A Detailed Guide

  Following are a couple recipes I wrote for Regular Expressions Cookbook, composing a fairly comprehensive guide to validating and formatting North American and international phone numbers using regular expressions. The regexes in these recipes are all pretty straightforward, but hopefully this gives an example of the depth you can expect from the book. For more … Continue reading Validate Phone Numbers: A Detailed Guide

  2010/2/9 14:57Steven Levithanhttps://blog.stevenlevithan.com/archives/validate-phone-number

• ‘High Performance JavaScript’ Giveaway Now Five Books

  Laurel Ackerman, Director of Marketing for O'Reilly Media, kindly offered to have O'Reilly pick up the tab for my ongoing book giveaway and increase the offer to five books! If you haven't entered the contest yet (which ends February 24th), now's your chance because your odds of winning have just gone up. 🙂

  2010/2/9 01:10Steven Levithanhttps://blog.stevenlevithan.com/archives/hpjs-giveaway

• Five Free Copies of Upcoming O’Reilly Book ‘High Performance JavaScript’

  Update (2010-02-25): This contest is now closed. Last year, Yahoo! engineer and all-around JavaScript badass Nicholas Zakas asked if I was interested in writing a chapter for a new book on JavaScript performance that he was working on. I agreed, and that book, High Performance JavaScript, is now available for preorder at Amazon and other … Continue reading Five Free Copies of Upcoming O’Reilly Book ‘High Performance JavaScript’

  2010/2/3 15:57Steven Levithanhttps://blog.stevenlevithan.com/archives/high-performance-javascript

• XRegExp 1.0

  After stalling for nearly a year, I've finally released XRegExp 1.0, the next generation of my JavaScript regular expression library. Although it doesn't add support for lookbehind (as I've previously suggested) due to what would amount to significant inherent limitations, it fixes a couple bugs, corrects even more cross-browser regex inconsistencies, and adds a suite … Continue reading XRegExp 1.0

  2009/6/24 10:29Steven Levithanhttps://blog.stevenlevithan.com/archives/xregexp-1-0

• Regular Expressions Cookbook is Out

  As of today, Regular Expressions Cookbook (written by Jan Goyvaerts and me, and published by O'Reilly Media) is listed as In Stock on Amazon.com and other fine bookstores. The book covers seven regular expression flavors (.NET, Java, JavaScript, Perl, PCRE, Python, and Ruby) and eight programming languages (C#, Java, JavaScript, Perl, PHP, Python, Ruby, and … Continue reading Regular Expressions Cookbook is Out

  2009/6/5 09:51Steven Levithanhttps://blog.stevenlevithan.com/archives/regex-cookbook-published

• ‘Regular Expressions Cookbook’ Complete

  Just a quick post to note that Regular Expressions Cookbook by Jan Goyvaerts and me (published by O'Reilly Media) is available for pre-order on Amazon.com, Amazon.co.uk, and many other places. It was mostly completed at the end of January, and is coming out May 15 June 4. Regular Expressions Cookbook contains a full regex tutorial … Continue reading ‘Regular Expressions Cookbook’ Complete

  2009/3/7 23:01Steven Levithanhttps://blog.stevenlevithan.com/archives/regex-cookbook-complete

• Still Alive

  Well, I'm back. I didn't mean to go silent for so long, but I've been busy. Although it will be a few months before it comes out, Jan Goyvaerts and I have mostly finished work on our new regex book — stay tuned for more info. During this blogging hiatus I've also attended multiple family … Continue reading Still Alive

  2008/12/22 06:55Steven Levithanhttps://blog.stevenlevithan.com/archives/still-alive

• Unicode Plugin for XRegExp

  Update: Many of the details described below are now out of date. Get the latest version of the Unicode plugin for XRegExp. I've released a simple plugin for XRegExp (my JavaScript regex library) that adds support for Unicode properties and blocks to JavaScript regular expressions. It uses the Unicode 5.1 character database, which is the … Continue reading Unicode Plugin for XRegExp

  2008/8/2 08:39Steven Levithanhttps://blog.stevenlevithan.com/archives/xregexp-unicode-plugin

• Code Challenge: Change Dispenser

  I recently encountered a brain teaser that asked to take an amount of change and return the equivalent in dollars and coins. Here's the five-minute solution I first came up with. function makeChange (money) { var i, num, output = [], coins = [ [100, "dollar", "dollars" ], [25, "quarter", "quarters"], [10, "dime", "dimes" ], … Continue reading Code Challenge: Change Dispenser

  2008/6/21 02:00Steven Levithanhttps://blog.stevenlevithan.com/archives/change-dispenser

• Multiple String Replacement Sugar

  How many times have you needed to run multiple replacement operations on the same string? It's not too bad, but can get a bit tedious if you write code like this a lot. str = str. replace( /&(?!#?\w+;)/g , '&' ). replace( /"([^"]*)"/g , '“$1”' ). replace( //g , '>' … Continue reading Multiple String Replacement Sugar

  2008/6/13 10:55Steven Levithanhttps://blog.stevenlevithan.com/archives/multi-replace

• Writing a Regex Book

  I'm excited to announce that I've recently started working on a regular expression book for O'Reilly Media. The back story is that a few months ago, Jeffrey Friedl (author of the world's best regular expression book yet ) was kind enough to introduce me to his editor at O'Reilly, Andy Oram. After Andy and I … Continue reading Writing a Regex Book

  2008/6/1 07:42Steven Levithanhttps://blog.stevenlevithan.com/archives/writing-a-regex-book

• Regex Day Contest

  A few months ago Ben Nadel (a regex fan and prominent ColdFusion blogger) asked me if I was interested in promoting his idea for a "National Regular Expression Day," where he'd give away some shirts and books and basically just have some fun with regex evangelism. Well, Ben finally kicked if off, assigning the honor … Continue reading Regex Day Contest

  2008/5/29 17:24Steven Levithanhttps://blog.stevenlevithan.com/archives/regexday-2008

• Remove Nested Patterns with One Line of JavaScript

  Here's a neat little trick I came up with for removing nested patterns from a string. var str = "abc 3>4>def"; while (str != (str = str.replace(/ ]*>/g, ""))); // str -> "abcdef" Notice that the regex in this one-liner doesn't try to deal with nested patterns at all. The while loop's condition replaces instances of … Continue reading Remove Nested Patterns with One Line of JavaScript

  2008/5/28 15:25Steven Levithanhttps://blog.stevenlevithan.com/archives/reverse-recursive-pattern

• Test Your XRegExps with JRX

  Cüneyt Yılmaz's JRX is a cool JavaScript regex tester inspired by the RX tool of Komodo IDE. Cüneyt recently added my XRegExp library to his tester, so JRX is now a nice and easy way to test XRegExp's singleline and extended modes, as well as named capture and other XRegExp-provided syntax. Check it out! As … Continue reading Test Your XRegExps with JRX

  2008/5/16 17:38Steven Levithanhttps://blog.stevenlevithan.com/archives/jrx-xregexp

• XRegExp 0.5 Released!

  Update: This version of XRegExp is outdated. See XRegExp.com for the latest, greatest version. If you haven't seen the prior versions, XRegExp is an MIT-licensed JavaScript library that provides an augmented, cross-browser implementation of regular expressions, including support for additional modifiers and syntax. Several convenience methods and a new, powerful recursive-construct parser that uses regex … Continue reading XRegExp 0.5 Released!

  2008/4/21 08:43Steven Levithanhttps://blog.stevenlevithan.com/archives/xregexp-0-5

• An IE lastIndex Bug with Zero-Length Regex Matches

  The bottom line of this blog post is that Internet Explorer incorrectly increments a regex object's lastIndex property after a successful, zero-length match. However, for anyone who isn't sure what I'm talking about or is interested in how to work around the problem, I'll describe the issue with examples of iterating over each match in … Continue reading An IE lastIndex Bug with Zero-Length Regex Matches

  2008/4/14 10:24Steven Levithanhttps://blog.stevenlevithan.com/archives/exec-bugs

• A JScript/VBScript Regex Lookahead Bug

  Here's one of the oddest and most significant regex bugs in Internet Explorer. It can appear when using optional elision within lookahead (e.g., via ?, *, {0,n}, or (.|); but not +, interval quantifiers starting from one or higher, or alternation without a zero-length option). An example in JavaScript: /(?=a?b)ab/.test("ab"); // Should return true, but … Continue reading A JScript/VBScript Regex Lookahead Bug

  2008/3/24 13:50Steven Levithanhttps://blog.stevenlevithan.com/archives/regex-lookahead-bug

• Solving Algebraic Equations Using Regular Expressions

  Regexes suck at math. To a regex engine, the characters 0 through 9 are no more special than any others. I should mention that there are a couple exceptions. Perl and PCRE allow dynamic code to be run at any point during the matching process, which presents a great deal of extra potential. Perl does … Continue reading Solving Algebraic Equations Using Regular Expressions

  2008/3/19 17:49Steven Levithanhttps://blog.stevenlevithan.com/archives/algebra-with-regexes

• JavaScript Roman Numeral Converter

  While looking for something quick to do during a brief internet outage, I wrote some code to convert to and from Roman numerals. Once things were back up I searched for equivalent code, but only found stuff that was multiple pages long, limited the range of what it could convert, or both. I figured I … Continue reading JavaScript Roman Numeral Converter

  2008/3/16 12:59Steven Levithanhttps://blog.stevenlevithan.com/archives/javascript-roman-numeral-converter

• Highlights From SXSWi 2008

  I'm back from the SXSW Interactive conference, which offered a pretty decent selection of panels and good times. I ended up attending about 20 panels over three and a half days, and about as many bars and after-parties. Here were some of the personal highlights, for anyone who's interested. The first session I attended on … Continue reading Highlights From SXSWi 2008

  2008/3/13 10:54Steven Levithanhttps://blog.stevenlevithan.com/archives/highlights-observations-from-sxswi-2008

• SXSW Interactive 2008

  Despite flight cancellations and a last-minute work crisis, I've been in Austin, Texas with a couple work buddies since late-Friday to attend the packed-out South by Southwest Interactive conference. It's been a lot of fun so far. 11 panels into it, the standout for me has easily been 10 Things We've Learned at 37signals by … Continue reading SXSW Interactive 2008

  2008/3/10 03:39Steven Levithanhttps://blog.stevenlevithan.com/archives/sxsw-2008

• Regular Expressions As Functions

  Firefox includes a non-standard JavaScript extension that makes regular expressions callable as functions. This serves as a shorthand for calling a regex's exec method. For example, in Firefox /regex/("string") is equivalent to /regex/.exec("string"). Early ECMAScript 4 proposals indicated this functionality would be added to the ES4 specification, but subsequent discussion on the ES4-discuss mailing list … Continue reading Regular Expressions As Functions

  2008/3/3 15:01Steven Levithanhttps://blog.stevenlevithan.com/archives/regular-expressions-as-functions

• Happy Valentine’s Day

  Some Valentine's-Day-themed geekery from around the intertubes… A Halo Valentine from II HYPNOTiiQ II and Xbox.com ↓ A hexadecimal / Zero Wing / Valentine / shirtmashup from ThinkGeek → ← The Rosette Nebula, Astronomy Picture of the Day for February 14, 2008, from Nasa.gov. The Rosette Nebula (aka NGC 2237) is not the only cosmic … Continue reading Happy Valentine’s Day

  2008/2/15 12:59Steven Levithanhttps://blog.stevenlevithan.com/archives/happy-valentines-day

• 10 Reasons to Learn and Use Regular Expressions

  10. Regular expressions are everywhere Here's a short list of programming languages and tools that support regular expressions. The links are to their regex documentation. The .NET Framework ActionScript ColdFusion Java JavaScript Perl PHP Python Ruby Tcl Apache HTTP Server Google Analytics Google Code Search Yahoo! Pipes Microsoft Exchange Server Windows PowerShell OpenOffice.org Oracle Database … Continue reading 10 Reasons to Learn and Use Regular Expressions

  2008/2/4 12:29Steven Levithanhttps://blog.stevenlevithan.com/archives/10-reasons-to-learn-and-use-regular-expressions

• A Few Art Samples

  Here be some old drawings I did back in 2002 or thereabouts (I haven't been drawing since then). They're done in pen, pencil, and colored pencil, with some touch-ups and added color from Photoshop. Most of my old art scans are no longer around after numerous computer upgrades, so I'm mostly just posting these here … Continue reading A Few Art Samples

  2008/1/24 12:59Steven Levithanhttps://blog.stevenlevithan.com/archives/old-art-samples

• Fun With .NET Regex Balancing Groups

  The .NET Framework's regular expression package includes a unique feature called balancing groups, which is a misnomer since although they can indeed be used to match balanced constructs, that's not all they're good for and really has nothing to do with how they work. Unfortunately, balancing groups are quite poorly documented. Following is a brief … Continue reading Fun With .NET Regex Balancing Groups

  2008/1/24 07:59Steven Levithanhttps://blog.stevenlevithan.com/archives/balancing-groups

• 80 Secrets to Success

  Behold my Mountain Dew collection at work, originally started when someone asked how much Dew I drank per day. This ended up taking me a couple months, since I slowed down from my previous ~4/day consumption rate right around the time I started preserving the evidence. The photo is by ColdFusion programmer and photographer Joe … Continue reading 80 Secrets to Success

  2008/1/22 11:04Steven Levithanhttps://blog.stevenlevithan.com/archives/dew-collection

• Regex Legends: The People Behind the Magic

  Many people have contributed to developing and promoting the use of regular expressions since they were invented about half a century ago. Here's a short list of some of the most influential people behind the technology. I've written this up for two reasons: For people who've only gotten into the technology recently but are interested … Continue reading Regex Legends: The People Behind the Magic

  2008/1/14 10:33Steven Levithanhttps://blog.stevenlevithan.com/archives/regex-legends

• Timed Memoization

  Certain operations are computationally expensive, but because their results might change over time or due to outside influences, they don't lend themselves to typical memoization — take for example getElementsByClassName. Here's a JavaScript timed memoization decorator / higher-order-function I made to help with these cases, which accepts an optional expiration argument in milliseconds. function memoize … Continue reading Timed Memoization

  2008/1/7 01:56Steven Levithanhttps://blog.stevenlevithan.com/archives/timed-memoization

• The terms single-line and multi-line considered harmful

  Alright, that title doesn't really work, but one thing I've encountered quite frequently is that the terms "single-line mode" and "multi-line mode" seem to cause no end of confusion for the vast majority of regex users. Many guides try to explain the terms based on some description of lines, or other unrelated issues. I won't, … Continue reading The terms single-line and multi-line considered harmful

  2008/1/3 12:52Steven Levithanhttps://blog.stevenlevithan.com/archives/singleline-multiline-confusing

• JavaScript, Regex, and Unicode

  Not all shorthand character classes and other JavaScript regex syntax is Unicode-aware. In some cases it can be important to know exactly what certain tokens match, and that's what this post will explore. According to ECMA-262 3rd Edition, \s, \S, ., ^, and $ use Unicode-based interpretations of whitespace and newline, while \d, \D, \w, … Continue reading JavaScript, Regex, and Unicode

  2008/1/2 14:11Steven Levithanhttps://blog.stevenlevithan.com/archives/javascript-regex-and-unicode

• JavaScript Password Validation

  Since I've seen tons of password validation help requests on regexadvice.com (where I hang out from time to time), I've written up a more general-purpose JavaScript password validation function. It's reasonably straightforward, and covers the validation requirements I've most frequently encountered. Plus, if it doesn't handle your exact needs, its functionality can be augmented by … Continue reading JavaScript Password Validation

  2007/12/9 05:55Steven Levithanhttps://blog.stevenlevithan.com/archives/javascript-password-validator

• /(bb|[^b]{2})/

  …That is the question. ThinkGeek is selling that on a t-shirt for the "regular expression junkie + lover of literature." Wearing that around would be a sure way to get me to notice you, especially if you have a nice rack or happen to be Angelina Jolie. Note that the parentheses are unnecessary except in … Continue reading /(bb|[^b]{2})/

  2007/12/3 12:05Steven Levithanhttps://blog.stevenlevithan.com/archives/2b-or-not-2b