How To Know If An Object Is An Html Document Using Javascript

I'm passing an object say, obj, to a function. obj could possibly of any type - (TemplatedHelper, AlertMessage, PartialViews, HTMLDocument, etc.) I want to know if obj is an HTML D

Solution 1:

Try this:

if (obj instanceofHTMLDocument)
{
    // obj is a HTMLDocument
}
if (Object.prototype.toString.call(obj) == "[object HTMLDocument]")
{
    // obj is a HTMLDocument
}

Solution 2:

You can try this

$obj.is('html')