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A full list of JavaScript operators with examples

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Next generation web framework for node.js

Which is more popular?
Based on our record, Koa.js seems to be a lot more popular than JavaScript Operator Lookup. While we know about 43 links to Koa.js, we've tracked only 1 mention of JavaScript Operator Lookup.
Website, pricing, platforms and company facts side by side.
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| Website | joshwcomeau.com | koajs.com |
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What each product offers, as listed by its team.


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How often each product is chosen within a category, 0–100% relative to the other.


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


We have no reviews of JavaScript Operator Lookup yet. Be the first one to post
Koa — from the creators of Express — rolls out with new riffs in web application craftsmanship. It’s lighter, nimbler, and has ditched the middleware weight to give you more control. Call it Express’s leaner, meaner...
It is another Node.js frame that was created by the designers following Express. It uses ES2017 async functions and thought as an expressive, and a frequently important reason for building APIs and web applications....
Despite being developed by the same teams, Koa is a simpler and a more customizable alternative to ExpressJS.
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
Koajs - Koa is a new web framework designed by the team behind Express. - Source: dev.to / 8 months ago
Using @ttoss/http-server and @ttoss/http-server-mcp, which are built on top of Koa and the official Model Context Protocol TypeScript SDK, this example showcases how to integrate traditional REST APIs with AI-compatible MCP endpoints in... - Source: dev.to / 10 months ago
I very quickly switched from raw JavaScript to TypeScript due to the improved DX experience and type safety. With that switch I also looked for a framework back then which not only supported TypeScript better, but also had proper support... - Source: dev.to / 11 months ago
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