gistfile1.js

$(function() {
  $(".sort_ajax").on("blur", function() {
    var $this = $(this);
    if ($this.attr("checked")) {
      var data = {};
      data.value = $this.siblings("[name='Style_code']").value();
      $.post("Product_Range", data, function(data) {
        $("#crud_page").trigger("change");  
      }, html);  
    }
  });
});

gistfile2.phtml

<input type="hidden" name="Style_code" value="<?php echo $row->Style_code; ?>">
<input type="checkbox" class="sort_ajax" <?php echo ($value === "1" ? "checked" : "") ?>>