ph4un00b · October 22, 2015 06:30
diff --git a/js-map.html b/js-map.html
 <!DOCTYPE html>
 <html>
  <head>
    <meta charset="utf-8">
    <title></title>
  </head>
  <body>
    <script type="text/javascript">
    var jamones = [
    {
      "id": 3,
      "title": "serrano",
      "location": "df",
      "image": "http://www.hamazing.com/image/cache/data/jamon/serrano/Teruel-Jamon-Serrano-IGP-Organic-Free-Range-712x400.jpg",
    },
    {
      "id": 4,
      "title": "pavo",
      "location": "monterrey",
      "image": "http://braedt-catalogo.com.pe/uploads/b/Jamyn-de-Pechuga-de-Pavo-Ahumado-.jpg",
    },
    {
      "id": 5,
      "title": "york",
      "location": "guadalajara",
      "image": "http://www.abc.es/Media/201401/24/jamon-york--478x270.jpg",
    },
    {
      "id": 6,
      "title": "americano",
      "location": "puebla",
      "image": "http://braedt-catalogo.com.pe/uploads/b/jamon-americano.jpg",
    }
  ];

    console.log('===== FOR LOOP show title');
    for(var counter=0; counter < jamones.length; counter++){
      console.log(jamones[counter].title);
    }

    console.log('===== FOREACH show title');
    jamones.forEach(function(jamon) {
      console.log(jamon.title);
    })

    // este metodo va aplicar una function a cada elemento de la collection
    // y regresa un nuevo arreglo
    Array.prototype.fMap = function (callback) {
      var collection = [];

      this.forEach(function(item) {
        collection.push( callback(item) );
      });

      return collection;
    }

    console.log('===== MAP show title');
    jamones.fMap(function(jamon) {
      console.log(jamon.title);
    });

    var lista = jamones.forEach(function(pasto){
      return pasto.nuevo_attributo = 'for each';
    });

    console.log('===== FOREACH nuevo attributo');
    console.log(lista);
    console.log(jamones);


    var jamones = [
    {
      "id": 3,
      "title": "serrano",
      "location": "df",
      "image": "http://www.hamazing.com/image/cache/data/jamon/serrano/Teruel-Jamon-Serrano-IGP-Organic-Free-Range-712x400.jpg",
    },
    {
      "id": 4,
      "title": "pavo",
      "location": "monterrey",
      "image": "http://braedt-catalogo.com.pe/uploads/b/Jamyn-de-Pechuga-de-Pavo-Ahumado-.jpg",
    },
    {
      "id": 5,
      "title": "york",
      "location": "guadalajara",
      "image": "http://www.abc.es/Media/201401/24/jamon-york--478x270.jpg",
    },
    {
      "id": 6,
      "title": "americano",
      "location": "puebla",
      "image": "http://braedt-catalogo.com.pe/uploads/b/jamon-americano.jpg",
    }
  ];

    var lista = jamones.fMap(function(jamon) {
      return { nuevo_attributo: 'map', title: jamon.title };
    });

    console.log('===== MAP nuevo attributo');
    console.log(lista);
    console.log(jamones);

    console.log('===== FOR LOOP new title');
    for(var counter=0; counter < jamones.length; counter++){
      jamones[counter].title = 'new title';
    }

    console.log(jamones);
    </script>
  </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title></title>
	</head>
	<body>
	<script type="text/javascript">
	var jamones = [
	{
	"id": 3,
	"title": "serrano",
	"location": "df",
	"image": "http://www.hamazing.com/image/cache/data/jamon/serrano/Teruel-Jamon-Serrano-IGP-Organic-Free-Range-712x400.jpg",
	},
	{
	"id": 4,
	"title": "pavo",
	"location": "monterrey",
	"image": "http://braedt-catalogo.com.pe/uploads/b/Jamyn-de-Pechuga-de-Pavo-Ahumado-.jpg",
	},
	{
	"id": 5,
	"title": "york",
	"location": "guadalajara",
	"image": "http://www.abc.es/Media/201401/24/jamon-york--478x270.jpg",
	},
	{
	"id": 6,
	"title": "americano",
	"location": "puebla",
	"image": "http://braedt-catalogo.com.pe/uploads/b/jamon-americano.jpg",
	}
	];

	console.log('===== FOR LOOP show title');
	for(var counter=0; counter < jamones.length; counter++){
	console.log(jamones[counter].title);
	}

	console.log('===== FOREACH show title');
	jamones.forEach(function(jamon) {
	console.log(jamon.title);
	})

	// este metodo va aplicar una function a cada elemento de la collection
	// y regresa un nuevo arreglo
	Array.prototype.fMap = function (callback) {
	var collection = [];

	this.forEach(function(item) {
	collection.push( callback(item) );
	});

	return collection;
	}

	console.log('===== MAP show title');
	jamones.fMap(function(jamon) {
	console.log(jamon.title);
	});

	var lista = jamones.forEach(function(pasto){
	return pasto.nuevo_attributo = 'for each';
	});

	console.log('===== FOREACH nuevo attributo');
	console.log(lista);
	console.log(jamones);


	var jamones = [
	{
	"id": 3,
	"title": "serrano",
	"location": "df",
	"image": "http://www.hamazing.com/image/cache/data/jamon/serrano/Teruel-Jamon-Serrano-IGP-Organic-Free-Range-712x400.jpg",
	},
	{
	"id": 4,
	"title": "pavo",
	"location": "monterrey",
	"image": "http://braedt-catalogo.com.pe/uploads/b/Jamyn-de-Pechuga-de-Pavo-Ahumado-.jpg",
	},
	{
	"id": 5,
	"title": "york",
	"location": "guadalajara",
	"image": "http://www.abc.es/Media/201401/24/jamon-york--478x270.jpg",
	},
	{
	"id": 6,
	"title": "americano",
	"location": "puebla",
	"image": "http://braedt-catalogo.com.pe/uploads/b/jamon-americano.jpg",
	}
	];

	var lista = jamones.fMap(function(jamon) {
	return { nuevo_attributo: 'map', title: jamon.title };
	});

	console.log('===== MAP nuevo attributo');
	console.log(lista);
	console.log(jamones);

	console.log('===== FOR LOOP new title');
	for(var counter=0; counter < jamones.length; counter++){
	jamones[counter].title = 'new title';
	}

	console.log(jamones);
	</script>
	</body>
	</html>