components in mithril

gistfile1.js

var app = {},
    buttonComponent = {};

buttonComponent.controller = function ( options ) {
    this.title = options.title;
};
buttonComponent.view = function ( ctrl ) {
    return m('button', 'The button component: ' + ctrl.title());
};

app.controller = function () {
    this.title = m.prop('idea');
};
app.view = function ( ctrl ) {
    return [
        m('h1', ctrl.title()),
        m(buttonComponent, { title: ctrl.title })
    ];
};

m.mount(document.getElementById('app'), app); // or maybe m.render