The documentation states that the "last" pseudo query is included by default here:

http://docs.sencha.com/ext-js/4-0/#!...ComponentQuery

But it doesn't work when I try to use it or look at it from the console.

Ext.ComponentQuery.pseudos.last
undefined
Ext.ComponentQuery.pseudos.not
function (components, selector){ var CQ = Ext.ComponentQuery, i = 0, length = components.length, results = [], index = -1, component; for(; i < length; ++i) { component = components[i]; if (!CQ.is(component, selector)) { results[++index] = component; } } return results; }