[рони]

frodo4500,

$.getJSON("data.json", json => {
    $('#demo').append(`<thead><tr></tr></thead>`);
    $('#demo').append(`<tbody><tr></tr></tbody>`);
    $.each(json.month_keys, (key, val) => {
      $('#demo thead tr').append(`<th>${val}</th>`);
      $.each(json.month_data['chart_data_y'][val], (k, v) =>{
      let tr = $('#demo tbody tr')[k];
      tr = tr ? $(tr) : $('<tr/>').appendTo('#demo tbody');
      $(`<td>${v}</td>`).appendTo(tr)
      } );
    });
  });