counter number increasing html code example

Example 1: js increment safety value html

function addRow(tableID) {

        var table = document.getElementById(tableID);

        var rowCount = document.getElementById(tableID).getElementsByTagName('tbody')
        [1].getElementsByTagName('tr').length;
        var row = table.insertRow(rowCount +1);

        var cell1 = row.insertCell(0);
        var element1 = document.createElement("input");
        element1.type = "hidden";
        element1.name = "Q[]";
        element1.value = rowCount +1;
        cell2.appendChild(element1);
        cell2.innerHTML = rowCount +1;
}

function deleteRow(tableID) {
        try {
        var table = document.getElementById(tableID);
        var rowCount = table.rows.length;

        for(var i=0; i<rowCount; i++) {
            var row = table.rows[i];
            var chkbox = row.cells[0].childNodes[0];
            if(null != chkbox && true == chkbox.checked) {
                table.deleteRow(i);
                rowCount--;
                i--;
            }


        }
        }catch(e) {
            alert(e);
        }
}

Example 2: number counter html

function animateValue(obj, start, end, duration) {
  let startTimestamp = null;
  const step = (timestamp) => {
    if (!startTimestamp) startTimestamp = timestamp;
    const progress = Math.min((timestamp - startTimestamp) / duration, 1);
    obj.innerHTML = Math.floor(progress * (end - start) + start);
    if (progress < 1) {
      window.requestAnimationFrame(step);
    }
  };
  window.requestAnimationFrame(step);
}

const obj = document.getElementById("value");
animateValue(obj, 0, 1220, 5000);

const obj2 = document.getElementById("value2");
animateValue(obj2, 0, 520, 5000);