Can a person's past criminal record be used to determine if bond would be granted. Does the judge look at arrest nd convictions or just the arrest?

The answer to your questions is "yes," the Judge can look at past history and will even consider who was the victim in the previous incident.  In this case, it sounds like the court was more concerned with the safety of the victim, if a no bond was set.  The court must look at the accused's ties to the community and public safety, along with other factors. The accused is entitled to a reasonable bond, so I would suggest you hire an attorney to represent the young man and file a motion for bond.