Handling difference between Chrome and Firefox for window.event and srcElement

get-srcElement

 'click .cancelbtn': function(e) {
    // To handle difference between Chrome and FF
    
    e = e || window.event;
    var se_id = e.target || e.srcElement;

    if (se_id) {
      console.log('Worked' + se_id);
      var c_id = se_id.id;
    } else {
      //var se_id = $(".cancelbtn").click(function (evt) { return value.Id } );
      console.log('Did not work');
    }
    var todo_id = c_id.replace('cancelbtn_', '');
    console.log('Clicked cancel :' + todo_id + ':');
 }