this == document

[byteit101]

how do you test if this is a reference to document?
this==document fails

[Markus]

this === document ?

Not sure.

[Dormilich]

test == document

worked for me.

another test would be

obj.toString().indexOf("HTMLDocument") != -1

[byteit101]

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)

[Dormilich]

see above


________________

[rnd me]

duck type it:

if (this.body && this.getElementsByTagName ){
  alert("this quacks like a document!");
}

[Dormilich]

@rnd me
there are cases possible, where this is also true for custom objects (so take care of what you duck tape)