Apply filter to any array of objects in Jquery

There are two ways of doing it.

1. You may use jQuery.grep():

var found_names = $.grep(names, function(v) {
    return v.name === "Joe" && v.age < 30;
});

DEMO: http://jsfiddle.net/ejPV4/

2.You can do this very easily with the [].filter method:

var filterednames = names.filter(function(obj) {
    return (obj.name === "Joe") && (obj.age < 30);
});

You will need to add a shim for browsers that don't support the [].filter method: this MDN page gives such code.