Retrieves a component by ID.

adkit.onReady(function() {
    var component = adkit.$('video1');
    if (component) {
        component.play();
    }
});            

Retrieves all components of a specified type.

adkit.onReady(function() {
    var components = adkit.getComponentsByType('adkit-media');
    components.forEach(function(comp) {
        comp.pause();
    });
});