This example shows how to get the content of Redactor with API and send to the server with jQuery Ajax.
<!--form -->
<form action="/server-script/" method="post">
<!-- element -->
<textarea id="content" name="content"></textarea>
<!-- submit button -->
<button onclick="sendForm();">Send</button>
</form>
<!-- call -->
<script>
$R('#content');
</script>
<!-- get and send content with API -->
<script>
function sendForm()
{
var content = $R('#content', 'source.getCode');
$.ajax({
url: '/savedata-server-script/',
type: 'post',
data: 'content=' + content
});
}
</script>