Adding a Doctype to the document dynamically using JavaScript

Question

I want to detect whether a doctype exists for the current document and add one if nothing exists.

I'm able to check whether a doctype exists using document.doctype. But how can i add one?

Oh my. In IE 7 and IE 8 if no doctype is specified it is running in Quirks mode. So position:fixed is not working. Hence i want to add a doctype dynamically. — NLV
– NLV, Commented Aug 26, 2010 at 9:15
I'd be very surprised if it's possible to get the page to change modes once it's loaded. — Tim Down
– Tim Down, Commented Aug 26, 2010 at 9:38
is there any other possibility by which i can tell the browser not to run in quirks mode? — NLV
– NLV, Commented Aug 26, 2010 at 11:05
At runtime, the browser would have already made up his mind. So you can't change the render mode during render. Makes sense, yes? — peirix
– peirix, Commented Aug 26, 2010 at 12:44

Anthony Mills · Accepted Answer · 2010-08-26 10:35:31Z

3

I don't think it's possible to change the page mode from within the page. Sorry.

answered Aug 26, 2010 at 10:35

Anthony Mills

8,7764 gold badges36 silver badges52 bronze badges

Sign up to request clarification or add additional context in comments.

1 Answer 1