$('') vs $('') in jQuery

Question

I see people creating HTML elements in jQuery in two different ways:

$(\'\')

and

$(\'\') 
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Answer 1

This is what the jQuery docs say about it:

To ensure cross-platform compatibility, the snippet must be well-formed. Tags that can contain other elements should be paired with a closing tag:

$('');

Alternatively, jQuery allows XML-like tag syntax (with or without a space before the slash):

$('');

Tags that cannot contain elements may be quick-closed or not:

$(''); $('');

See this question, however, on what is most efficient:

What is the most efficient way to create HTML elements using jQuery?