Your child currently is trying to assess, process, learn so many things. Sometimes, as a result of this 'everything at once' state, they tend to find it hard to control their overflowing emotions. This too is a part of their emotional development and their control will only get better with each passing day, with your guidance of course.
What you need to know
As a parent you need to ensure that your child learns to control their emotions well. After all, you don’t want a child who screams at you when you are with the guests or starts to sob bitterly when you are preparing dinner. At the same time, you can’t deny your child from expressing their emotions. What you can instead do is create a model of healthy emotional self-management.
To do so, you need to be the right role model for your child. For instance, don’t yell and shout at the child if you want them to learn how to avoid anger and tantrums. Speak respectfully so that your child emulates this behavior. Also, accept your child’s feelings and recognize them even if they are inconvenient. For instance, “I know you are sad, but we can’t eat candies today.”