exportAnyDo.js

var rows = [];

Array.prototype.forEach.call(groups, function(group){

  var header = group.querySelector('#name');
  if(header){
    rows.push('*** ' + header.textContent);
    
    var tasks = group.querySelectorAll('.task .title');
  
    Array.prototype.forEach.call(tasks, function(task){
      rows.push(task.textContent);
    });
  
  }
});

var txtString = rows.join("\n");
console.log(txtString);