_.each syntax

_.each

  // Call iterator(value, key, collection) for each element of collection.
  // Accepts both arrays and objects.
  //
  // Note: _.each does not have a return value, but rather simply runs the
  // iterator function over each item in the input collection.
  
  
  _.each = function(collection, iterator) {
    _.each(collection, iterator(value, key, collection) {
    }
  };

_.each = function(collection, iterator) {
if (Array.isArray(collection)) {
for (var i = 0; i<collection.length; i++) {
_.each(iterator (value, key, collection)) {

    }
  }
}

};