1<textarea name="DSC" class="materialize-textarea"></textarea>
2<script>
3  CKEDITOR.replace('DSC');
4  </script>
5
6var desc = CKEDITOR.instances['DSC'].getData();
7OR:
8
9var desc = CKEDITOR.instances.DSC.getData();

1$('input#mybutton').click(function() {
2    var text = $('textarea#mytextarea').val();
3    //send to server and process response
4});

1<textarea id="myTextarea">
2Hello World
3</textarea>
4
5<script>
6  var x = document.getElementById("myTextarea").value;
7</script>

1$("textarea").val()

1var message = $('textarea#message').val();
2