Form submitted multiple times

I am working on a single page application using codeigniter and jquery, clicking on the menu I load the content and it works great, it loads the first time and when I try to submit the modal form it works, but every time I reload the content and I submit same form again, I saw it was submitted the number of times I reloaded the content on the page.

this is how I load the main content into the container when I click on the menu item:

case 'Parametrage':
      $("#container").empty();
      $("#container").load("params");
      break;

      

        
        
        
      

    

and a script loaded by the "param" controller that represents the modal form:

$(function(){
    $('body').on('submit', 'form', function(e){
       e.preventDefault();

        $.ajax({
            type: "POST",
            url: "<?php echo site_url("params/save_form"); ?>",
            data:$(this).serialize(),
            success: function(response){ 
                if(response == 'true'){
                    $.modal.close();    
                    var table = $('#table_id').DataTable();
                    table.ajax.reload();
                    $('#dialog-message').attr('title','Enregistrement');
                    $('#msgIcon').attr('class','ui-icon ui-icon-circle-check');
                    $('#msgMessage').html('Enregistré avec succès');
                    $("#dialog-message").dialog({
                      modal: true,
                      buttons: {
                        Ok: function() {
                          $(this).dialog("close");
                        }
                      }
                    });
                }else{
                    $('#errors_container').html(response);  
                }

            },
            error: function(){
                alert('Error');
            }
        });     
    });
});

      

        
        
        
      

    

You can help?

thank

Based on Shaiful Islam's answer, this solves the problem:

case 'Parametrage':
     $("#container").empty();
     //Added this line
     $('body').off("submit", "form");
     $("#container").load("params");
     break;