Html appending end of an <p> element

Question

how can i append here:
<p> some text "i want to append here" <span background-color:red;></span>"not here"</p>

not end of span the begining of span

Answer 1

Brains🇳🇬 it works when i use before statement in span

Answer 2

js as an,
insertBefore() method.
p.insertBefore("hello") is the opposite of..
p.append("hello");