Submit form by Ajax

Good question. That feature is most often needed when using the form inside a popup window as in this example but it will also work in a standard page.

Normally, when a form is submitted, the data goes back to the server for processing (in this case, adding a testimonial) then the server directs your browser to reload the page or go to another page.

With the Ajax method, only the form success/failure message is returned by the server and displayed in your browser. This is faster and usually provides a more seamless experience for your visitors.

Ajax is not on by default to prevent potential conflicts with themes and other plugins that also use this method. So give it a try and see how it works for you.