var counter = 0;
function myCounter() {
    counter++;
    document.getElementById("counterDisplay").innerText = counter;
    console.log("vous avez cliqué",counter, "fois");
}

document.getElementById("clickCounter").addEventListener('click', myCounter)


function changeFontSize() {
    var newSize= document.getElementById('textSize').value + "px"
    var paragraphs = document.getElementsByTagName('p');

    for(var i=0; i<paragraphs.length; i++) {
        paragraphs[i].style.fontSize = newSize;
    }

}

    document.getElementById("textSize").addEventListener('input' ,changeFontSize)