Using Javascript filters From http://designpepper.com/blog/drips/filtering-arrays-with-array-filter?utm_source=javascriptweekly&utm_medium=email

Using Javascript filters

var sidekicks = [
    { name: "Robin",     hero: "Batman"   },
    { name: "Supergirl", hero: "Superman" },
    { name: "Oracle",    hero: "Batman"   },
    { name: "Krypto",    hero: "Superman" }
];

var batKicks = sidekicks.filter(function (el) {
    return (el.hero === "Batman");
});

// Outputs: [
//    { name: "Robin",  hero: "Batman"   },
//    { name: "Oracle", hero: "Batman"   }
// ]
console.log(batKicks);

var superKicks = sidekicks.filter(function (el) {
    return (el.hero === "Superman");
});

// Outputs: [
//    { name: "Supergirl", hero: "Superman" },
//    { name: "Krypto",    hero: "Superman" }
// ]
console.log(superKicks);