How to change display screen🤔

Question

https://code.sololearn.com/W8viQ2WHT6F9/?ref=app
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Umm,I don't know to explain my problem exactly....
The mentioned code above got a button,so I want it to display something else like a picture or some bit more text to appear when I press that button..and it(picture or some text) will be occupied the full screen......[As an xample: just think that u have WhatsApp or other social app,and u got a message from a person...so when we tap on that person,it changes to to chat screen with full screen occupied...and goes back as it was when pressed on the back button]
Hope u guys understand my question 😕☺️

Answer 1

Thank you👍

Answer 2

For now;YES😇

Answer 3

No didn't meant to display an image...by the way that👆 one told me the answer I required...

Answer 4

Hi.
I think you can do what you say with javascript (js)
Do you know this language?

And if you want in this button see an img
You can remove span tag and write img tag between button tag🤔