text: $(document).ready(function() {
      var val;
      var val1;
      $("#currancy2").on('change', function() {
          var option1 = $("#currancy1 option:selected").text();
          var option2 = $("#currancy2 option:selected").text();
          if (option1 == option2) {
              alert("Please slect diffrent Currancy");
          }
      });
  
      $("#currancy1").on('change', function() {
          var option1 = $("#currancy1 option:selected").text();
          var option2 = $("#currancy2 option:selected").text();
  
          if (option1 == option2) {
  
              alert("Please slect diffrent Currancy");
          } else {
              $("#one_coin1_value").each(function() {
              });
          }
      });
  
      $("#one_coin1_value").keyup(function() {
          calculateSum();
      });
  });
  
  function calculateSum() {
      var texboxval = parseFloat($("#one_coin1_value").val())
      var value = parseFloat($("#currancy1").val());
      var value1 = parseFloat($("#currancy2").val());
  
      var sum = texboxval + value;
      var result = (sum) / (value1);
  
      $("#one_coin2_value").val(result);
      //$("#one_coin2_value").text(result);
      //.toFixed() method will roundoff the final sum to 2 decimal places
      //$("#one_coin2_value").html(sum.toFixed(2)); 
  }