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                <!DOCTYPE html>
    <meta charset="utf8">
    <title>sum price</title>
          <td class="price">200000</td>
  <input type="button" value="合計">


                body {
  background-color: #a3d5d3;
  font-family: 'Helvetica', 'Arial', sans-serif;

table,tr,th,td {
  font-size: 14px;
  list-style-type: none;
  margin: 0px auto;
  border-radius: 3px;
  border: 1px solid #000;
  padding: 5px;
  margin-bottom: 2px;

td {
  background: #eeeff0;
  padding-left: 15px;

input[type='button'] {
  display: block;
  font-size: 14px;
  margin: 20px auto 0px auto;


    // 表の金額を取得する(tdの奇数列を取得)
    var pricelist = $("table td:odd").map(function(index, val){
    //var pricelist = $("table td[class=price]").map(function(index, val){
      var price = parseInt($(val).text());
      if(price >= 0) {
        return price;
      } else {
        return null;
    // 価格の合計を求める
    var sum_price = 0;
    pricelist.each(function(index, val){
      sum_price = sum_price + val;