Can not get exact text when change select tag in jQuery

Question

I'm trying to get value has rendered from variable.php of Woocommerce, I mean get the content render by javascript when click select variable tag. I tried these code bellow but can not get exactly:

<script>
$('.variations .value select').on('change', function(){
    var one = $(".woocommerce-variation-custom_field").text();
    console.log(one);
    $(".pricemarket").text(".woocommerce-variation-custom_field");
  });
</script>

I want to get value has rendered when change option, then add value to .pricemarket element.