ServiceNow Application Development

Namespaces and phases

Just like any language based on XML, Apache Jelly includes multiple namespaces. The xmlns:j is used for Jelly, whereas the xmlns:g is used to include the Glide namespace. When referring to tags within Jelly and glide namespaces, we only use the prefixes j and g respectively. There are two other namespaces available: xmlns:j2 and xmlns:g2. These usually represent the phase of the script, where we either use <j> versus <j2>and <g> versus <g2>.

All Jelly script in ServiceNow will start with the following line of code:

<j:jelly trim= "false" xmlns:j= "jelly:core" xmlns:g= "glide" xmlns:j2= "null" xmlns:g2= "null" > 

In the preceding script, we include jelly:core and glide namespaces, and they will be referred to the script ...