Let's talk about what you should do if your child has tantrums when it comes to potty training. It's really important to remain calm as difficult as it may be, you don't want to get upset with your child. Once you start potty training, if you ask your child to use the potty or tell them that it's time to go to the potty and they have a tantrum, you don't want that to get them out of using the potty. For instance, if you say, "Okay. It's time to go sit in the potty" and your child falls on the floor and has a tantrum, starts screaming and crying, he says, "No, I don't want to." You can't let that behavior get them out of going to the potty. You still want to follow through with your demand.
So you want to tell them, you know, "We're going to go sit on the potty now." You want to help them up. You can gently guide them under their armpits to the bathroom. Don't carry them, don't make it fun, still having them walk to the bathroom on their own with a little bit of guidance, but it's important that you don't let the tantrum allow them to not do the behavior that you asked them to do because they will learn that every time they don't want to go potty, all they have to do is throw a tantrum.
So you need to be consistent in the way that you respond to tantrums. Basically just ignore, continue on with what they're doing and have them go to the potty, and that way, you can reduce tantrums again in the future.