Dynamically changing a h2 on webpage

[adam12]

I have a html form that has say 3 text input fields and I want to dynamically change the text in a h2 whenever (on any key press during entry) the content of these 3 text fields changes.  I'm thinking that this could be done somehow with a java script but have no idea how.  Perhaps the following might help clarify:

<h2>This topic describes [field value 1] at [field value 2] in [field value 3]</h2>

So the h2 would dynamically change as input fields 1, 2 or 3 are being entered.

Hoping someone can help.

Edited March 25, 2022 by adam12

[Ingolme]

Have you gone through the Javascript tutorial? You should have enough information after reading it to be able to solve this.