Hello World, Revisited

This example revisits our original Hello World example to show how you can easily change a postback-based form and interactions into AJAX-postback-based ones.

Whereas before, we executed a Server on the button's click, we have now changed that to an Ajax. Everything else remains the same.

The result is the exact same interaction, but now performed Asynchronously via Ajax. Note that after clicking the button, the entire page doesn't "refresh"—but the label's content changes as defined in the PHP method btnButton_Click.

Click the button to change my message.