JSFiddle - React, Tailwind, and code Playground

by argiropoulostauros

HTML

<div class="myClass">1</div>
<div class="myClass">2</div>
<div class="myClass">3</div>
<div class="myClass">4</div>
<div class="myClass">5</div>

JavaScript

$(".myClass").each(function(i){
    if(i%2==0){
        $(this).data('myAttr',i+1);                
    }
});
    
$('.myClass').each(function(i){
    console.log($(this).data('myAttr'));
});    
    
//Solution
var elements=$('.myClass').filter(function(){return $(this).data('myAttr') !== undefined;});

console.log(elements);