core_js_9.js

Array.prototype.each = function(callback) {
     for(i = 0; i < this.length; i++) {
          callback(this[i]);
     }
};

var test = [ { name : 'a' }, { name : 'b' }, { name : 'c' } ];
test.each(function(elem) {
     alert(elem.name);
});