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//Javascript code to Add new rows onclick of a button and to delete row .
function addMoreRows() {

    var user = document.getElementById('user_id').value;
    var date = document.getElementById('date').value;
    var color = document.getElementById('color').value;
    var table = document.getElementById('tbl_id');

    var row = table.insertRow();

    var userName = row.insertCell(0);
    var Date = row.insertCell(1);
    var Color = row.insertCell(2);
    var checkbox = row.insertCell(3);

    userName.innerHTML = user;
    Date.innerHTML = date;
    Color.innerHTML = color;

}

function deleteMoreRows(tableID) {

    var table = document.getElementById(tableID);
    var rowCount = …