How to set a value of the textarea without id by javascript?

Question

Typically we run javascript code to set any value:

document.getElementById(\'id_name\').value = \"...\";

But I have a page like this:

Answer 1

There are a few differerent possibilities and many context:

document.querySelector("textarea").value = "Your text";// Set a first textarea find in a page.

document.querySelectorAll("textarea").value = "Your text";// Set all textarea find in a page.

document.getElementById('myForm').querySelector("textarea").value = "Your text";// Set a textarea into a form: (frequently used).