Purpose of document. all

 

New Use of document. all

Now we need to create a program to capture web pages.
In turn, there is a need to traverse the dom, firefox is very easy to do, specifically the document. createTreeWalker () function available, strange functions, but also become the document attribute.
IE did not find the method, so he had to use the original docuemnt. all. I did not expect it to succeed.
Js Code copying code


Var k = 0;
Var elements2 = document. all;
For (var I = 0; I <elements2.length; I ++)
{
Var oNode = elements2 ;
If (oNode. nodeType = 1 & oNode. tagName. toUpperCase () = tag)
{
K ++;
}
If (obj = oNode ){
Break;
}
}
Alert (k );