var foo = [{ bar: 1, baz: [1,2,3] }, { bar: 2, baz: [4,5,6] }]; var filtered = $.grep(foo, function(v){ return v.bar === 1; }); console.log(filtered); <
var foo = [{ bar: 1, baz: [1,2,3] }, { bar: 2, baz: [4,5,6] }]; var filtered = $.grep(foo, function(v){ return v.bar === 1; }); console.log(filtered);
Without jQuery and backwards compatibility
for (var i = 0; i < foo.length; i++) { if (foo[i].bar === 1) { foo[i].baz = [11,12,13]; } }