AEM Expression Language

.content.xml

<granite:rendercondition
    jcr:primaryType="nt:unstructured"
    sling:resourceType="granite/ui/components/coral/foundation/renderconditions/simple"
    expression="${param.biz == 'baz'}"
    expression="${empty param.foo}"
    expression="${not empty param.foo and not empty param.bar}"
    expression="${param['foo'] not eq 'bar'}"
    expression="${cookie.cookiename.value eq 'foo'}"
    expression="${requestPathInfo.selectorString == 'edit'}"
    expression="${requestPathInfo.suffix != '/foo/bar')}"
    expression="${paramValues['item'][0] == '/foo/bar'}"/>

<granite:rendercondition
    jcr:primaryType="nt:unstructured"
    sling:resourceType="granite/ui/components/coral/foundation/renderconditions/simple"
    expression="${granite:contains(requestPathInfo.suffix, '/foo/bar')}"
    expression="${!granite:containsIgnoreCase(header['User-Agent'], 'iPad')}"
    expression="${granite:relativeParent(requestPathInfo.suffix, 2) != '/content')}"/>