first_card_value() in helpers.js
function first_card_value() {
  var v=g_click_card.id;
  if (klass(g_click_card)=='temp') {
    var i=v-100; var v=g_temp_col[i];
  }
  return parseInt(v);
}
klass(card) in helpers.js
function klass(card) {
  var arr=['main','temp','final'];
  var k='';
  for (var i=0;i<arr.length;i++) {
    if (card.classList.contains(arr[i])) {
      k=arr[i];
    }
  }
  return k;
}

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