JSFiddle - React, Tailwind, and code Playground
HTML
<div class="bar" data-percentage="70,33"></div>
<div class="bar" data-percentage="90"></div>
<div class="bar" data-percentage="20"></div>
<div class="bar" data-percentage="100,8"></div>
<div class="bar" data-percentage="10,4"></div>
<div class="result"></div>
JavaScript
var dataSource;
$('.bar').each(function(index){
dataSource = $(this).attr('data-percentage');
if (dataSource.indexOf(',') != -1) {
dataSource = dataSource.replace(/,/g, '.');
}
$('.result').append(dataSource+"<br>");
})