
JavaScript.com
JavaScript Quiz
Learn JavaScript
JavaScript Knowledge Map
Do you speak JavaScript?
50 Tips on JavaScript
dateDropper Javascript
A full list of JavaScript operators with examples

regular expressions 101
rubular
Expresso
RegEx Generator
Regex Crossword
i Hate Regex
RegexPlanet Ruby
RegExr.com is an online tool to learn, build, and test Regular Expressions.

Which is more popular?
Based on our record, RegExr seems to be a lot more popular than JavaScript Operator Lookup. While we know about 368 links to RegExr, we've tracked only 1 mention of JavaScript Operator Lookup.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | joshwcomeau.com | regexr.com |
| Pricing | — | |
| Company | — | Startup from the United States |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of JavaScript Operator Lookup yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using JavaScript Operator Lookup and RegExr. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


If you replace your || with ?? You should get the behaviour you are after. This is a good reference for what the operators do in js: https://joshwcomeau.com/operator-lookup. Source: about 5 years ago
Use Online Tools: There are many online regex testers and visualizers that can help you see how your patterns match against sample text. These tools often provide explanations for each part of the regex. I personally use... - Source: dev.to / over 1 year ago
However - here it becomes weird - when testing the original regex rule (the first one, without the \u00A0 part) on the same string in an interactive visualiser (https://regexr.com/ for instance), there is a match:. - Source: dev.to / almost 2 years ago
Learned regex in the 90's from the Perl documentation, or possibly one of the oreilly perl references. That was a time where printed language references were more convenient than searching the internet. Perl still includes a shell... - Source: Hacker News / about 2 years ago
When comparing JavaScript Operator Lookup and RegExr, you can also consider the following products.

A free resource for learning and developing in JavaScript
Compare JavaScript.com to JavaScript Operator Lookup or RegExr:

Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript.
Compare regular expressions 101 to JavaScript Operator Lookup or RegExr:

Check your knowledge by having fun.
Compare JavaScript Quiz to JavaScript Operator Lookup or RegExr:

A ruby based regular expression editor
Compare rubular to JavaScript Operator Lookup or RegExr:

Learn JavaScript with guided tests and flashcards
Compare Learn JavaScript to JavaScript Operator Lookup or RegExr:

The award-winning Expresso editor is equally suitable as a teaching tool for the beginning user of regular expressions or as a full-featured development environment for the experienced programmer with an extensive knowledge of regular expressions.
Compare Expresso to JavaScript Operator Lookup or RegExr: