Javascript collection

Question

sorry for noobie question. Can you explain please, what is the difference between:

1. var a = [];
   a[\'b\'] = 1;

2. var a = {};
   a[\'b\'] = 1;
         


        

Answer 1

I would use an array of objects:

collection = [ 
    { "key":"first key", "value":"first value" }, 
    { "key":"second key", "value":"second value" } 
];

etc