[Javascript] Object References

[Mike Dougherty]

Given this:

var loTP = (some object)
for (itm in loTP.Area0112) {
   loTP.Area0112[itm].prop0 = (something)
   loTP.Area0112[itm].prop1 = (something else)
   loTP.Area0112[itm].prop2 = (something else)
   }

Would it be "better" to reduce the object references to this:

var loTP = (some object)
for (itm in loTP.Area0112) {
   var loCurObj = loTP.Area0112[itm]

   loCurObj.prop0 = (something)
   loCurObj.prop1 = (something else)
   loCurObj.prop2 = (something else)
   }

Is there a "With" construct?  what is the syntax/usage?  (does it matter?)
(My question is whether or not there is a reason to reduce the length of the reference, not to ask 
about syntax I probably could look up)