Final answer:
The attitude of Janos Hunyadi towards Vlad II Dracul in the spring of 1442 cannot be determined from the information provided as the historical context required for this period is not included.
Step-by-step explanation:
The attitude of Janos Hunyadi towards Vlad II Dracul in the spring of 1442 is not clearly defined in the historical records provided. The information available primarily discusses the Ottoman expansion under Sultan Suleiman, post-World War II events in Hungary involving Soviet intervention, and other historical contexts that are not directly relevant to the relationship between Janos Hunyadi and Vlad II Dracul during the period in question. To accurately assess Hunyadi's attitude towards Vlad II Dracul, specific historical texts and records pertaining to that period are required, which are not present in the information provided.