Maximum size of an Array in Javascript

Question

Context: I\'m building a little site that reads an rss feed, and updates/checks the feed in the background. I have one array to store data to display, and another which stor

Answer 1

The maximum length until "it gets sluggish" is totally dependent on your target machine and your actual code, so you'll need to test on that (those) platform(s) to see what is acceptable.

However, the maximum length of an array according to the ECMA-262 5th Edition specification is bound by an unsigned 32-bit integer due to the ToUint32 abstract operation, so the longest possible array could have 2³²-1 = 4,294,967,295 = 4.29 billion elements.