How to show selected value in dropdown using Ajax

To show a selected value in a dropdown using Ajax, you can follow these steps:

• Create the HTML dropdown: Start by creating the HTML dropdown with a list of options that the user can select from. For example:

<select id="myDropdown">

  <option value="1">Option 1</option>

  <option value="2">Option 2</option>

  <option value="3">Option 3</option>

</select>

• Attach an event listener: Next, attach an event listener to the dropdown so that you can detect when the user selects a value. For example, you can use the `change` event to detect when the value changes:

$('#myDropdown').on('change', function() {

  var selectedValue = $(this).val();

  // Do something with the selected value

});

• Send an Ajax request: Inside the event listener, you can send an Ajax request to the server to retrieve data based on the selected value. For example, you can use the `$.ajax` method to send a GET request to the server:

$.ajax({

  url: '/my-data-endpoint',

  type: 'GET',

  data: { selectedValue: selectedValue },

  success: function(data) {

    // Do something with the returned data

  },

  error: function(xhr, textStatus, errorThrown) {

    // Handle any errors that occurred

  }

});

• Update the dropdown: Once the data is returned from the server, you can update the dropdown to show the selected value. For example, you can use the `val` method to set the value of the dropdown to the selected value:

$('#myDropdown').val(selectedValue);

Overall, showing a selected value in a dropdown using Ajax involves attaching an event listener to the dropdown, sending an Ajax request to the server to retrieve data based on the selected value, and updating the dropdown with the selected value once the data is returned.