Native JavaScript does not handle AJAX responses correctly

I'm facing an issue with my ajax call where the returned HTML works well on changes, but the Javascript that should perform actions based on clicks within the results is not functioning properly.

Here is the ajax call:

    function update_order_shipping(){
      $.ajax({
         url: 'ajax_order_shipping.php',
         method: "post",
         dataType: 'html',
         success: function (result) {
             $('#shipping-method').html(result);
      },
      error: function(xhr, status, error) {
        //alert(xhr.responseText);
      }
      });
 };

The ajax call itself works perfectly and returns the required results.

The problem arises with the radio buttons in the returned results. When I try to execute the following JavaScript upon a change event:

    $('input[name="shipping"]').change(function() {
       if($(this).is(':checked') && ($(this).val() == 'freeamount_freeamount')){
    document.getElementById('fedex_number').style.display="none";
    document.getElementById('ups_number').style.display="none";
          document.getElementById('your_shipping_conditions').style.display="none";
var shipping_method = document.getElementById('text-freeamount').innerText;
 document.getElementById('text-shipping').innerHTML = shipping_method;
var shipping_value = document.getElementById('value-freeamount').innerText;
document.getElementById('value-shipping').innerHTML = shipping_value;
    
       }
    });

While this JavaScript works fine on initial page load, it fails to work on the returned results, which contain identical HTML as the initial page load. It seems like a binding issue. Any suggestions on how to implement it so that the JavaScript functions correctly on the returned results?

javascriptajax

Answer №1

To ensure proper event handling for elements created dynamically, remember to utilize the on method.

$("main").on("click", "button[name='submit']", function(event) {   
   // execute code here 
});

The selector "main" can be substituted with any stable element that is higher up in the DOM hierarchy than your target input.

This approach allows events to be captured even if the element was added after the initial loading of the page.

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