JSFiddle - React, Tailwind, and code Playground

HTML

<input class="order form-control vnumber" type="text" maxlength="1" name="Orderbox[]" required="true">
<input class="order form-control vnumber" type="text" maxlength="1" name="Orderbox[]" required="true">
<input class="order form-control vnumber" type="text" maxlength="1" name="Orderbox[]" required="true">
<input class="order form-control vnumber" type="text" maxlength="1" name="Orderbox[]" required="true">
<input class="order form-control vnumber" type="text" maxlength="1" name="Orderbox[]" required="true">

JavaScript

$('.order').keyup(function () {

   
    // initialize the sum (total price) to zero
    var val = 0;
    var next_val=0;
    // we use jQuery each() to loop through all the textbox with 'price' class
    // and compute the sum for each loop
    $('.order').each(function() {
        val+=$(this).val();
	
	
    });
      alert(val);
      if (next_val==val) {
	alert("same value");
      }
      next_val=val;
});