JSFiddle - React, Tailwind, and code Playground

HTML

<input data-intervalle=1 type="button" value="de 1 en 1"/>
<input data-intervalle=2 type="button" value="de 2 en 2"/>
<input data-intervalle=3 type="button" value="de 3 en 3"/>
<div id="out">

JavaScript

var moncompte = 0;
var intervalle = 1;

function compter(){
    moncompte += intervalle;
    $('#out').append(moncompte+" - ");
}

$(document).ready(function(){
    $('input').click(function(){
        intervalle = $(this).data('intervalle');
    });
});

setInterval(compter, 1000);