index.js
function (callback) {
            var i;

            for (i = 0; i < this.data.length; i += 1) {
                callback.call(this, this.data[i], i);
            }
            return this;
        }
function (callback) {
            var i;

            for (i = 0; i < this.data.length; i += 1) {
                callback.call(this, this.data[i], i);
            }
            return this;
        }
function ( callback ) { var i ; for ( i = 0 ; i < this . data . length ; i += 1 ) { callback . call ( this , this . data [ i ] , i ) ; } return this ; }
Iterates through all the objects

@public
@param {Function(Object, Number)} callback
@return {Com}
Iterates through all the objects