Javascript: iterate through dynamically changing dictionary

Question

I'm trying to iterate through a dictionary while dynamically changing its size, by adding elements in Javascript. The dictionary is initialized with 1 element. Pseudo code should look like this:

dict = {1:1};
i = 0;
for key in dict{
  dict[i] = i+1;
  i++;
  if i==10{break;}
}

Answer 1

Dictionary keys (object properties) shouldn't be integers, but this will grow your "dictionary" to have 10 elements (it will only add nine because it will skip when i == 1 :

var dict = { 1: 1 };
for (var i = 0; i < 10; i++) {
    if (!dict.hasOwnProperty(i)) {
        dict[i] = i + 1;
    }
}