JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" class="price" /><br>
<input type="text" class="price" /><br>
<input type="text" class="price" /><br>
<input type="text" class="price" /><br>

JavaScript

$('.price').blur(function () {
    var sum = 0;
    $('.price').each(function() {
        if($(this).val()!="")
         {
            sum += parseFloat($(this).val());
         }

    });
        alert(sum);
});