explaination of object javascript

Question

I am looking at javascript file and they started it off as

var myPage = new Object();
var myDocument = document.all;

then there is some code. and then this part

myPage.Search = myDocument.Search;
myPage.Search.searchType = "Description";

I am using eclipse with aptana. I want to know why would someone wanna do this

myPage.Search = myDocument.Search;

why not

myDocument.Search.searchType = "Description";

Answer 1

It depends on the rest of the code. if myPage is passed into a function later, the myPage.Search = myDocument.Search; will allow the client function to access Search without having to access myDocument . The assignment to searchType can then be done either way.

The fact that they are using document.all is a good indication that you want to stay far away from that code. document.all hasn't been a sensible way to access elements since IE 4. at least use document.getElementById() -- But really, use a library like jQuery or Prototype.