Need Help in pure Js

Question

need characters to be counted using pure Js...No jquery plz

exemple:

UserName: Michael
7

10x

https://code.sololearn.com/WIo41pPYBCop/?ref=app

Answer 1

<input id="user" type="text" oninput=document.getElementById("count_character").innerHTML=event.target.value.length>

Answer 2

thank you very much