SQL Fiddle
ExtendsClass SQL Online
DB Fiddle
V (programming language)
Online SQL Editor
explainshell
db<>fiddle
Online compiler for many languages, including MySQL

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

Which is more popular?
Based on our record, Rextester should be more popular than JavaScript Operator Lookup. It has been mentioned 7 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
R
Rextester
|
|
|
|---|---|---|
| Website | insurance.rextester.com | joshwcomeau.com |
| Listed in |
What each product offers, as listed by its team.

No features have been listed yet.
Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Rextester and JavaScript Operator Lookup. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

It supports around 30 languages including Java, but it is more popular among C# users. Rextester started as a Regular Expression Tester, later grew to be an online IDE.
We have no reviews of JavaScript Operator Lookup yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.

My Professor has not provided any resources or material to help complete this project, I have tried to problem solve, use the internet, even chatgpt. (I can send the code that it gave me in comments if needed, but ) I need help... Source: over 3 years ago
Does it really do that? (I've just tried in rextester.com, it complains about declared but unused variables.). Source: over 3 years ago
(A quick survey of some of the languages at rextester.com showed that they are usually counted from 1. I'd suggest doing the same would be least surprising.). Source: over 4 years ago
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
When comparing Rextester and JavaScript Operator Lookup, you can also consider the following products.

A tool for easy online testing and sharing of database problems and their solutions.
Compare SQL Fiddle to Rextester or JavaScript Operator Lookup:

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

Online SQL playground for testing and sharing SQL snippets. SQLite, MySQL and PostgreSQL.
Compare ExtendsClass SQL Online to Rextester or JavaScript Operator Lookup:

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

An online tool for testing, sharing and collaborating on SQL snippets
Compare DB Fiddle to Rextester or JavaScript Operator Lookup:

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