regular expressions 101
RegExr
rubular
Expresso
Regex Crossword
i Hate Regex
RegexOne
RegEx Generator
Playcode.io
CodePen
CodeSandbox
JSFiddle
JS Bin
StackBlitz
WebDen
PythonSandbox
regular expressions 101 Playcode.ioBased on our record, regular expressions 101 seems to be a lot more popular than Playcode.io. While we know about 881 links to regular expressions 101, we've tracked only 10 mentions of Playcode.io. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
In practice, the first unpaired ] is treated as an ordinary character (at least according to https://regex101.com/) - which does nothing to make this regex fit for its intended purpose. I'm not sure whether this is according to spec. (I think it is, though that does not really matter compared to what the implementations actually do.) Characters which are sometimes special, depending on context, are one more thing... - Source: Hacker News / about 2 months ago
> unreadable once written (to me anyway) https://regex101.com can explain your regex back to you. - Source: Hacker News / about 2 months ago
To try out our newfound regex, I will use the website called RegEx101. It's a superhero favourite, so you better bookmark it for later 🔖. - Source: dev.to / 3 months ago
Let's break it down a bit. You can use Regex101 to follow me. - Source: dev.to / 4 months ago
URL: https://regex101.com What it does: Test and debug regular expressions with instant explanations. Why it's great: Simplifies regex learning and ensures patterns work as intended. - Source: dev.to / 5 months ago
URL: https://playcode.io What it does: An online playground for rapid testing of HTML, CSS, and JavaScript. Why it's great: Prototype ideas in seconds with live previews — no local setup needed! - Source: dev.to / 5 months ago
I've been working on such browser JavaScript Playground: (https://playcode.io) for 7 years. - Source: Hacker News / over 1 year ago
The screenshot is from https://playcode.io which is the leading platform for JS playground. Source: over 1 year ago
If instead you run the original code in your console, it should produce undefined as expected as it isn't transpiled to es5 as in playcode.io. Source: about 2 years ago
The best way to learn is to do it hands on. Only difference between doing it at school VS by yourself is that the school will do the leg work of gathering the learning materials for you. I would suggest taking a look at https://playcode.io/ an starting with Javascript. I know it can be a very frustrating process as a whole, but if you want to succeed you need to struggle at first. Javascript is not as easy to... Source: about 2 years ago
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
CodePen - A front end web development playground.
rubular - A ruby based regular expression editor
CodeSandbox - Online playground for React
Expresso - 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.
JSFiddle - Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.