Page Comparison

Hold off on using CDN URLs until

skin.xml:
 
<resources xmlns="http://www.jasig.org/uportal/web/skin"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.jasig.org/uportal/web/skin https://source.jasig.org/schemas/resource-server/skin-configuration/skin-configuration-v1.2.xsd">

    <js included="plain">//code.jquery.com/jquery-1.10.2.js</js>
    <js included="aggregated">//code.jquery.com/jquery-1.10.2.min.js</js>
    <js included="plain">//code.jquery.com/ui/1.10.3/jquery-ui.js</js>
    <js included="aggregated">//code.jquery.com/ui/1.10.3/jquery-ui.min.js</js>
</resources>
 
JSP file:

<%-- This example assumes the portlet.xml defines a portlet preference includeJsLibs=false that the installer can override to set to true if needed.
     The portletPreferencesValues variable comes from the defineObjects tag library. --%>
<%@ taglib prefix="portlet" uri="http://java.sun.com/portlet_2_0" %>
<portlet:defineObjects/>
<c:if test="${portletPreferencesValues['includeJsLibs'][0] != 'false'}">
    <rs:aggregatedResources path="/resources.xml"/>
</c:if>
 
<script type="text/javascript"><rs:compressJs>
    var ${n} = {};   <%-- This is one way to namespace this portlet's version of jQuery --%>
<c:choose>
    <c:when test="${portletPreferencesValues['includeJsLibs'][0] != 'false'}">
        ${n}.jQuery = jQuery.noConflict(true)
    </c:when>
    <c:otherwise>
        ${n}.jQuery = up.jQuery;
    </c:otherwise>
</c:choose>
    ${n}.jQuery(function(){
        ...
    }
</rs:compressJs></script>

On your local and dev instance, you can permanently disable JavaScript and CSS aggregation by adding to your .bash_profile:

export JAVA_OPTS="$JAVA_OPTS -Dorg.jasig.resourceserver.utils.aggr.aggregated_theme=false”

Also see UE Development Tips