text: var _dateUpdated = "2022/05/04";
  var _timeUpdated = "00:10h";
  var _ODWGupdated = "2022/05/03";
  var _JHUupdated  = "2022/05/03";
  
  function initPage() {
      // update updated time
      document.getElementById("update-date").textContent = _dateUpdated;
      document.getElementById("update-time").textContent = _timeUpdated;
  
      // set all select elements to default index
      Array.from( document.getElementsByClassName("data-select") )
           .forEach( function(select) { select.selectedIndex = "0"; } );
      Array.from( document.getElementsByClassName("yaxis-select") )
           .forEach( function(select) { select.selectedIndex = "0"; } );
  }
  