Best way to store a key=>value array in JavaScript?

Question

What\'s the best way to store a key=>value array in javascript, and how can that be looped through?

The key of each element should be a tag, such as

Answer 1

If I understood you correctly:

var hash = {};
hash['bob'] = 123;
hash['joe'] = 456;

var sum = 0;
for (var name in hash) {
    sum += hash[name];
}
alert(sum); // 579