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this == document

how do you test if this is a reference to document?
this==document fails
Sep 27 '09 #1
6 1728
6,050 Expert 4TB
this === document ?

Not sure.
Sep 27 '09 #2
8,658 Expert Mod 8TB
Expand|Select|Wrap|Line Numbers
  1. test == document
worked for me.

another test would be
Expand|Select|Wrap|Line Numbers
  1. obj.toString().indexOf("HTMLDocument") != -1
Sep 27 '09 #3
Oops! I have two documents, on inside an iframe in one. is there a way to see if it is a Document? (typeof this returns object, I need to be more specific)
Sep 27 '09 #4
8,658 Expert Mod 8TB
see above

Sep 27 '09 #5
rnd me
427 Expert 256MB
duck type it:
Expand|Select|Wrap|Line Numbers
  1. if (this.body && this.getElementsByTagName ){
  2.   alert("this quacks like a document!");
  3. }
Sep 28 '09 #6
8,658 Expert Mod 8TB
@rnd me
there are cases possible, where this is also true for custom objects (so take care of what you duck tape)
Sep 28 '09 #7

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