ClojureScript JavaScript API documentation covers JavaScript interoperation and collection behavior.
Underdash
Copy and paste reusable JavaScript utility functions from the Underdash collection.
About Underdash
Underdash is a web reference of small JavaScript utility functions that you copy and paste into your own code instead of installing a library. Each function is shown as source code with a short usage example, and a copy-to-clipboard button sits next to each snippet.
The collection groups the same operation into three variants: a plain array version, a synchronous iterator version, and an async iterator version. Entries visible on the homepage include chunks, concat, dropWhile, equals, every, fill, filter, find and flatten. Some array functions are marked as already defined on arrays. The site does not state a license or pricing.
Key features
- Copy-to-clipboard button for each utility function snippet
- Three variants per operation: array, sync iterator and async iterator
- Inline usage examples showing input and returned output
- Reference-style sections for arrays, synchronous iteration and asynchronous iteration
- Functions shown as plain JavaScript source, not as an installable package
Best for: JavaScript developers who want to paste a small utility function into a project rather than add a dependency.
Good for
- Snippets are shown in full with an example of expected output
- Both synchronous and asynchronous iterator versions are provided for covered functions
- Copy-to-clipboard is available for each snippet
Watch out for
- No license is stated on the page, so reuse terms are unclear
- Coverage shown on the homepage is limited to a small set of array and iterator helpers
- No package, version history or repository is offered for installation or updates
Underdash at a glance
- Website
- surma.github.io/underdash
- Category
- Development › Programming Languages
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Underdash alternatives
Tools and sites you could use instead, ranked by how closely they match.
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Underdash FAQ
Do I install Underdash as a package?
No. The site presents functions to copy and paste directly into your own code.
Which kinds of functions are covered?
Array helpers and their synchronous iterator and async iterator equivalents, such as chunks, concat, dropWhile, equals, every, fill, filter, find and flatten.
How do I get a function into my project?
Use the copy-to-clipboard button next to the snippet you need.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.