Why is $("<p></p>").text ("example") used in place of $("p")?

Question

I have been learning JQuery with the app but it never really explains any difference or use for that

Answer 1

the first selects all p tags,same with second.But the difference is the first can be used to select a p tag with I'd
$("<p Id='p' ></p>");

Answer 2

I am not quite sure, but does the first selector select empty paragraphs, while the second selects all paragraphs, doesn't it?

UPDATE: first selector and second are totally equal. My first suggestion is wrong that would be done by
$("p:empty"). This means you can use both in the same way. For class or id selection use their specific selectors.

Answer 3

Therefore you should use the ID selector $("#id)