add javascript ajax example

docs/patterns/jquery.rst

@@ -162,5 +162,6 @@ explanation of the little bit of code above:
    argument.  Note that we can use the `$SCRIPT_ROOT` variable here that
    we set earlier.
 
-If you don't get the whole picture, download the :gh:`sourcecode
-for this example <examples/jqueryexample>`.
+Check out the :gh:`example source <examples/javascript>` for a full
+application demonstrating the jQuery on this page, as well as the same
+thing using ``XMLHttpRequest`` and ``fetch``.

docs/testing.rst

@@ -209,12 +209,6 @@ Running that should now give us three passing tests::
 
     ============= 3 passed in 0.23 seconds ==============
 
-For more complex tests with headers and status codes, check out the
-`MiniTwit Example`_ from the sources which contains a larger test
-suite.
-
-.. _MiniTwit Example:
-   https://github.com/pallets/flask/tree/master/examples/minitwit/
 
 Other Testing Tricks
 --------------------