JSFiddle - React, Tailwind, and code Playground

HTML

<video id="player" style='width: 150px;height: 150px;' controls>
        <source src="https://interactive-examples.mdn.mozilla.net/media/cc0-videos/flower.mp4" type="video/mp4">
 </video>
<button id="getTimer">Afficher le temps</button>
<div>
L'utilisateur en est Ă  <span id="currentTimer">0</span>s de lecture
</div>

JavaScript

let player = document.getElementById("player")
let button = document.getElementById("getTimer")
let timer = document.getElementById("currentTimer")

button.addEventListener("click", () => {
	timer.innerText = player.currentTime
  console.log( player.currentTime)
})