Are Javascript arrays sparse?

Question

That is, if I use the current time as an index into the array:

array[Date.getTime()] = value;

will the interpreter instantiate all the elem

Answer 1

You could avoid the issue by using a javascript syntax designed for this sort of thing. You can treat it as a dictionary, yet the "for ... in ... " syntax will let you grab them all.

var sparse = {}; // not []
sparse["whatever"] = "something";