javascript subset of object array matching certain property
let cities = [
{name: 'Los Angeles', population: 3792621},
{name: 'New York', population: 8175133},
{name: 'Chicago', population: 2695598},
{name: 'Houston', population: 2099451},
{name: 'Philadelphia', population: 1526006}
];
let bigCities = cities.filter(function (e) { // filter function
return e.population > 3000000;
});
//Output:
[
{ name: 'Los Angeles', population: 3792621 },
{ name: 'New York', population: 8175133 }
]