JSFiddle - React, Tailwind, and code Playground

HTML

<svg id="svg" width="100%" height="800">
</svg>

JavaScript

var cont = 0;
	
	function horloge_dynamique(x,y,diametre,decalage){
		
		var svg = document.getElementById('svg');
		cont++;
		
		//cree circle
		var newCircle = document.createElementNS('http://www.w3.org/2000/svg', 'circle');
		newCircle.setAttributeNS(null, 'id', 'circle' + cont);
		newCircle.setAttributeNS(null,'stroke-width',2);
		newCircle.setAttributeNS(null,'stroke','black');
		newCircle.setAttributeNS(null,'fill','Aqua');
		svg.appendChild(newCircle);
		
		//cree aiguille heure
		var newLine = document.createElementNS('http://www.w3.org/2000/svg', 'line');
		newLine.setAttributeNS(null, 'id', 'heure' + cont);
		newLine.setAttributeNS(null, "stroke","red");
		newLine.setAttributeNS(null, "stroke-width","4");
		svg.appendChild(newLine);
		
		//cree aiguille minute
		var newLine = document.createElementNS('http://www.w3.org/2000/svg', 'line');
		newLine.setAttributeNS(null, 'id', 'min' + cont);
		newLine.setAttributeNS(null, "stroke","orange");
		newLine.setAttributeNS(null, "stroke-width","2");
		svg.appendChild(newLine);
		
		//cree aiguille seconde
		var newLine = document.createElementNS('http://www.w3.org/2000/svg', 'line');
		newLine.setAttributeNS(null, 'id', 'sec' + cont);
		newLine.setAttributeNS(null, "stroke","black");
		newLine.setAttributeNS(null, "stroke-width","1");
		svg.appendChild(newLine);
		
		//var circle = document.getElementById("circle_horloge");
		var circle = document.getElementById("circle" + cont);
		circle.setAttribute("cx",x);
		circle.setAttribute("cy",y);
		circle.setAttribute("r",diametre);
		
		//heure
		//var aiguille_heure = document.getElementById("heure");
		var aiguille_heure = document.getElementById("heure"+ cont);
		aiguille_heure.setAttribute("x1",x);
		aiguille_heure.setAttribute("y1",y);
		aiguille_heure.setAttribute("x2",x);
		aiguille_heure.setAttribute("y2",(y-diametre)+diametre/3);
													
		//minutes
		var aiguille_min = document.getElementById("min"+...