This JavaScript-based HashSet class functions as an unordered array with a native system hash for quick value searches. It is perfect for high-performance JavaScript functions that require speedy, non-repeated operations.

The best part? This software is available for free under the BSD License! Compatibility-wise, JavaScript Hashset can run on Internet Explorer 5, 5.5, 6, 7, 8, 9, 10, and 11, as well as Node, NPM, Chrome, Firefox, Opera, and Konqueror. You are looking at a nearly universal compatibility feature with this software.
What exactly is hashset? It is like an unordered array of values, but it can be searched exponentially faster than the native Array.contains or Array.indexOf functions. JavaScript Hashset provides a quick and efficient way for developers to search and look up particular values within an array, without suffering the performance bottlenecks that come with other lookup methods. While it may impact memory use somewhat more than normal arrays, it is not exponential, so you can rest easy.
Hashsets are highly desired in optimized C# and Java programming as they take advantage of a dictionary-like lookup that does not slow down as the set grows in size. This makes it ideal for avoiding duplicate entries in an array or checking the existence of a value without a performance slowdown.
One common concern with Hashsets is that they are unordered and hence cannot be enumerated (foreach). Fortunately, this potential weakness is overcome in 'JavaScript Searchable Hashset' by providing an enumerate function as well as a copyToArray function.
'JavaScript Searchable Hashset' can use any value as a key, including string, integer, array, classes, and even types. This makes it flexible and in line with common Javascript programming practices. It also includes advanced hashset features that Java and dotNet developers usually expect, like: 'copyToArray', 'exceptWith', 'isSubsetOf', and 'unionWith', making it an excellent choice for low-level/high-performance applications.
Overall, JavaScript Hashset is a powerful software option that offers top-notch compatibility, optimized search/lookup routines, and advanced features that make it an invaluable tool for developers. Try JavaScript Hashset today to supercharge your coding work!
Version 1.0: Newly released searchable hashset software