same class div sum , display in div and read $variable on php - php

Question

I want to sum all numbers in the same div class (class is dinamic variable called $events[2]) and display it on my class div result on the loop but i cant make javascript read the variable $('$events[2]') on the php
<script>
var sum = 0;
$('$events[2]').text(function(i, v) {
sum += parseFloat(v.replace(',', ''));
});
$('.result').text('Result : ' + sum);
</script>
<?php
echo "<td class='tb1'>{$events[0]}</td></div>"; //foto
echo "<td>";
echo "<div class='w_promotora_images'>{$events[7]}</td></div>"; //foto
echo "<td>";
echo "<div class='w_promotora_images'>{$events[3]}</td></div>"; //data
echo "<td class=''>{$events[2]}</td>"; //nome
echo "<td class=' tb1'>{$events[4]}</td>"; //evento
echo "<td class=' tb1'>{$events[5]}</td>"; //horario
echo "<td class=' tb1'>{$events[6]}</td>"; //obs
echo "<td class=' tb1'>{$events[10]}</td>"; //horas
echo "<td class=' tb1'>{$events[9]}</td>"; //valor hora
echo "<td class=' tb1'>{$events[1]}</td>"; //Props
echo "<td ><div class='{$events[2]}'> {$events[8]}</td></div>"; //t parcial
echo "<td class=''><div class='result'> </div> </td></tr>";
}?>
</table>

Answer 1

If your variable is in php, javascript will not be able to parse it. You must output the var in php :
$('.<?= $events[2] ?>').text(function(i, v) {
sum += parseFloat(v.replace(',', ''));
});
I also add the "." for if you don't add it, jquery will not know that you are fetching an element by its class name.