Version: 2018.2
public static Component AddComponent (GameObject gameObject, Type type);
public static T AddComponent (GameObject gameObject);

Parameters

gameObjectThe GameObject to add the new component to.
typeThe type of component to create and add to the GameObject.

Returns

Component Returns the component that was created and added to the GameObject.

Description

Creates a new component and adds it to the specified GameObject.

using UnityEngine;
using UnityEditor;

public class CreateComponentExample { [MenuItem("ObjectFactoryExample/Add Camera to Selection")] public void AddDefaultComponentEditor() { if (Selection.activeGameObject != null) { Camera camera = ObjectFactory.AddComponent<Camera>(Selection.activeGameObject); } } }