The _.chain() method furthermore gives a nice functional style ways of building lists which is useful when building UI in React, like so:

    var list = _.chain([1, 2, 3, 4, 5])
        .filter(function (value) {
            return value > 2;
        })
        .map(function (value) {
            return value;
        });

    console.log(list);

    // prints:
    // [3, 4, 5]