Now we know how to extract information from an ltx object. Next, we can look at building up a response stanza and echoing the message.

To start building a new stanza, we create a new message, as follows:

const message = new ltx.Element('message') 

Next, we'll need to add details as to whom to send the message to and give it a type of chat. This can be achieved by using the attr() method and providing a second argument:

message.attr('type', 'chat') 
message.attr('to', from) /* Since we're echoing back to the sender */ 

If we don't supply a from attribute, the XMPP server will be nice enough to add this data for us before passing on the stanza. By supplying a second argument to the element constructor, we can actually shortcut these method calls as follows:

const message = new ltx.Element( 
  'message', 
  { type: 'chat', to: from } 
) 

To add a child element and element text, we use the c() (short for child) and t() (short for...