How do we implement the AJAX HTTPObject to update a textbox on click of a button in ASP.Net

Question

How do we implement the AJAX HTTPObject to update a textbox on click of a button in ASP.Net and javascript. Would the same code apply if the updation would be done on a datagrid ? A implementation of HTTPObject that I read is given at http://jai-on-asp.blogspot.com/2009/12/ajax-classical-way.html

Answer 1

Please don't reimplement this. Find a nice javascript toolkit like jQuery (or Prototype, MooTools, Dojo, ...) that has an AJAX implementation and use it. You'll save yourself a lot of grief with cross-browser support if you use an existing implementation that's already been well tested in practical usage.

Example using jQuery:

$('#myButton').click( function() {
   $.ajax({
        url: '/example.com/findsomething',
        dataType: 'json',
        success: function(data) {
            $('#myTextBox').val( data.value );
        }
   });
});

This assumes that the value is retrieved via a GET request and is returned in JSON object with the following format: { value: 'the actual value' };