无法计算 table 行的总和 我已经从互联网上尝试了很多方法但没有

Can't calculate the sum of table rows I've tried many ways from the internet but nothing

我想构建从 api 获取数据的 tables 并且我成功了,所以我现在需要计算 table 行的数量并在下一行显示总数或在 span div 中没关系。我只需要如图所示的总数..

我已经尝试了很多解决方案来计算行,但结果总是为零或 NaN。我不确定我做错了什么,或者我只是在这段代码的某处犯了错误...如果可能的话,我将不胜感激你的意见或解决方案。

function statsYesterday() {
    $.getJSON('https://api.url, function(data) {
        var data, i, offer, creative, id, conversion, clicks, payout = "";
        for (i in data.response.data.data) {
        offer += "<table><tr><td>" + data.response.data.data[i].Offer.name + "</td></tr></table>";
        creative += "<table><tr><td>" + data.response.data.data[i].OfferUrl.name + "</td></tr></table>";
        id += "<table><tr><td>" + data.response.data.data[i].Stat.affiliate_info1 + "</td></tr></table>";
        conversion += "<table><tr><td>" + data.response.data.data[i].Stat.conversions + "</td></tr></table>";
        clicks += "<table><tr><td>" + data.response.data.data[i].Stat.clicks + "</td></tr></table>";
        //this code reduce payout by 20%
        var num = parseFloat(data.response.data.data[i].Stat.payout);
        var val = num - (num * .20);
        payout += "<table><tr><td> &euro; " + val + "</td></tr></table>";

        
        });
        //end reduce code
        //this is how code look like without reducing percentage
        //payout += "<table><tr><td>" + data.response.data.data[i].Stat.payout + "</td></tr></table>";
        
        

        document.getElementById("offer_name").innerHTML = offer;
        document.getElementById("creative_name").innerHTML = creative;
        document.getElementById("id_name").innerHTML = id;
        document.getElementById("converion_name").innerHTML = conversion;
        document.getElementById("clicks_name").innerHTML = clicks;
        document.getElementById("payout_name").innerHTML = payout;
        
    };
    });
    };

<body>

<div class="container">
  
  <br><br><button onclick="statsYesterday()" style="background-color: #4CAF50;border: none;color: white;padding: 16px 32px;text-align: center;text-decoration: none;display: inline-block;font-size: 16px;margin: 4px 2px;transition-duration: 0.4s;cursor: pointer;">Yesterday</button> &nbsp; &nbsp; &nbsp; <button onclick="statsToday()" style="background-color: #4CAF50;border: none;color: white;padding: 16px 32px;text-align: center;text-decoration: none;display: inline-block;font-size: 16px;margin: 4px 2px;transition-duration: 0.4s;cursor: pointer;">Today</button> &nbsp; &nbsp; &nbsp; <button onclick="statsLastWeek()" style="background-color: #4CAF50;border: none;color: white;padding: 16px 32px;text-align: center;text-decoration: none;display: inline-block;font-size: 16px;margin: 4px 2px;transition-duration: 0.4s;cursor: pointer;">Last Week</button>
    <br><br>
  <table class="table" id="table">
    <thead>
      <tr>
        <th>Offer</th>
        <th>Creative</th>
        <th>SubID</th>
        <th>Conversion</th>
        <th>Clicks</th>
        <th>Payout</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="offer_name"></td>
        <td id="creative_name"></td>
        <td id="id_name"></td>
        <td id="converion_name"></td>
        <td id="clicks_name"></td>
        <td id="payout_name" style="padding-top:30px;"></td>
      </tr>
    </tbody>
  </table>
  <br><br>
</div>

</body>

将值压入一个数组,然后您可以稍后对它们执行加法 像这样

values=[]
//... your code 
 var num = parseFloat(data.response.data.data[i].Stat.payout);
        var val = num - (num * .20);
         values.push(val)

然后您可以简单地遍历数组并添加值

 let total=values.reduce((acc,curr)=>acc+curr)
  document.getElementById("total").textContent=total