The conversion of jquery objects to DOM objects

The conversion of jquery objects to DOM objects
Only jquery objects can use the method defined by jquery. Note that DOM objects are different from jquery objects, and you should be aware of whether you are manipulating DOM objects or jquery objects when calling methods.
Ordinary DOM objects can generally be converted to jquery objects by $ ().
such as: $ (document.getelementbyidx_x ("MSG")) is a jquery object, you can use the method of jquery.
Because the jquery object itself is a collection. So if a jquery object is to be converted to a DOM object, it must take one of these items, which is generally available through the index.
such as: $ ("#msg") [0],$ ("div"). EQ (1) [0],$ ("div"). get () [1],$ ("TD") [5] These are DOM objects, you can use the methods in the DOM, but you can't use the jquery method.
The following are the correct ways to do this:
$ ("#msg"). html ();
$ ("#msg") [0].innerhtml;
$ ("#msg"). EQ (0) [0].innerhtml;
$ ("#msg"). Get (0). InnerHTML; -

The conversion of jquery objects to DOM objects