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();

        });
   });