Javascript, Array of Objects?

It honestly depends what you want to do with this array

If you are going to send it via an XMLHTTPRequest then I'd say you should use JSON format.

var arr_of_objs = [{},{}]; //fill it up however you need it

If this array is going to consist of objects with the same attributes/properties and you were going to use this client side, creating "classes" is optimal.

var person = function(o){
  this.name = o.name || 'unknown';
  this.height = o.age || -1;
}
var arr_of_classes = [];
for(var i = 0; i < 10; i++){
  arr_of_classes.push(new person({
    name: 'name' + i,
    age: 10 + i
  }));
}

Why stop there? You could even create a custom class to handle instances.

    (function(){
      var person = function(o){
        this.name = o.name || 'unknown';
        this.height = o.age || -1;
      }
      var personHandler = function(){
        if(!(this instanceof personHandler)){
          return new personHandler();
        }
        this.persons = [];
      }
      personHandler.fn = personHandler.prototype = {
        load: function(){
          for(var i = 0; i < 10; i++){
            this.persons.push(new person({
              name: 'name' + i,
              age: 10 + i
            }));
          }
        },
        remove: function(index){
          //do stuff
        }

      }

   //export it
   window.personHandler = personHandler;

    })();

Then you would simply.

personHandler().load();