Optimizing search functionality with large javascript arrays

Processing arrays can take quite a few bit of time, this is something that can directly impacts the loading speed of your page and depend of the computer and the browser your users use. When you think that a typical users can load your website with a netbook , or an iphone for that matter, speeding up search in large arrays can be a good way to optimize your code.

If you never studied in computer science, well like me, the first way you might think about searching in your arrays is to do a loop using the array length and compare each item with your query until you find what you need.

This means that if you are looking for all the items starting by…