启用/禁用jQuery中单选按钮选择的按钮

我有一个页面，其中有2个单选按钮和一个下一个按钮.我已禁用了下一个按钮，并且仅当我选择任何单选按钮时才启用.但是现在，当我转到另一页面并返回此页面时，尽管已选择了单选按钮，但下一个按钮被禁用. PFB代码

I have a page in which there are 2 radio buttons and a next button. I have made next button disabled and it is enabled only when I select any radio button. But now when I go to another page and come back to this page the next button comes as disabled although the radio button is already selected. PFB the code

$(document).ready(function () {
     $('#commandButton_1_0').attr('disabled', 'true');
     $('input:radio[name=a_SignatureOption]').click(function () {
         var checkval = $('input:radio[name=a_SignatureOption]:checked').val();
         if (checkval == '1' || checkval == '2') {
             $('#commandButton_1_0').removeAttr('disabled');
         }
     });
});