Why isn't my code working??Can anybody help

Question

I was making a calculator using javascript I watched. Yt tutorial and I made this
But for some weird reasons I isn't working
Please send help FAST!!!
https://code.sololearn.com/W3vAesaNQy3w/?ref=app

Answer 1

You should write in html part all id as follows:

First digit<input type="text" id="val">

Answer 2

THANK YOU SOOO MUCH!!!BROTHER
I AM DUMB I FORGOT THAT YOU NEED TO ADD# WHEN USING THE ELEMENT FOR STYLE OR JAVASCRIPT
AGAIN THANK YOU SOO MUCH
I WILL NEVER FORGET THIS
YOU SAVED ME
THANKSSS!!!!

Answer 3

You are welcome!