How do I get the entire page's HTML with jQuery?

Question

I used $(document).html(), but that threw an error... is there a way to get everything?

Answer 1

No need to lean on jQuery. The best and simplest approach is to use

new XMLSerializer().serializeToString(document)

which will always give you the contents of the entire page including DOCTYPE tag, and it is supported in all modern browsers: https://caniuse.com/#feat=xml-serializer