I inserted the following code in a WordPress plugin:
wp_deregister_script('jquery');
wp_register_script('jquery', "http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js");
wp_enqueue_script('jquery');
The following is echoed to the browser:
<script type='text/rocketscript' data-rocketsrc='http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js?ver=3.3.1'></script>
Instead of:
<script type='text/javascript' src='http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js'></script>
I don’t know what is happening. Perhaps wp_register_script() is supposed to work in this way. I also tested if any jQuery code worked on the client side but it didn’t.
Probably one of wordpress plugins is using
CloudFlare.https://support.cloudflare.com/hc/en-us/articles/200168056-What-does-Rocket-Loader-do-
Try disabling all the plugins and re-enabling them one by one to find out which one is causing this issue. It’s not a problem actually.