What does yh mean?
“YH” is an acronym used in place of "Yuh-Huh", which also means "yes". So, "YH" can be used in place of "yes", or "yeah" or any other similar affirmative word. It is used in Internet slang, SMS, texting and chat, and can also be used in hand-written notes handed back-and-forth during class.
When to use / Other meanings. Depending on the context, "YH" can also mean
"YH" is very informal, so should only be used in informal situations.
"You Here?" or "You Home?"
"Yahoo!" which can be an expression of joy, or can be Yahoo.com.
Example
Person A: See you after school?
Person B: 'Sounds good, yh.
Dictionaries


Yh
By: Teacher Sierra from AmazingTalker
Today, I will teach you “yh”.
Yh is an abbreviation. It means “yeah”. Some people use this when they are sending messages to one another. Yh is informal.
Let’s look at a dialogue below.
Heather and Kathy are texting each other.
Heather: Last week, I told you that I won’t be able to make it to the party. Looks like my plans have changed again.
Kathy: Does this mean you are going to the party tomorrow?
Heather: Yh.
Kathy: That’s great! Ttyl!
Heather: Alright! See ya!
Note: Ttyl means "talk to you later". See ya is an informal way of saying "see you".




