JSFiddle - React, Tailwind, and code Playground

HTML

<table>
     <tr>
           <td class = "numeric">0</td>
           <td class = "numeric">2</td>
           <td class = "numeric">3</td>
           <td class = "numeric">1</td>
           <td class = "numeric">4</td>
           <td class = "numeric" id="city3"></td>
    </tr>
</table>

JavaScript

var tds = document.getElementsByClassName('numeric');
    
    var total = 0;
    for(var i = 0; i < tds.length; i++) {
        var textValue = tds[i].innerHTML;
        if(textValue != '') {
            total += parseInt(tds[i].innerHTML);   
        }
    }
    
    alert(total); // alerts the total sumed up