Is it expected that jQuery $('span').html() turns XHTML br tag to html syntax?

Question

If I have a span tag like this:

 <span>Hi<br />SecondLine</span>

And I call this jQuery function:

 var html = $('span').html();

html is set to:

 Hi<br>SecondLine

Now, I realize the name of the function is html() and not xhtml(). But is this expected behavior? Can I count on it, or do I alway need to check for a xhtml br tag and an html br tag, in say, this example:

function br2nl(text) {
    return text.replace(/<br \/>/gi, '\n').replace(/<br>/gi, '\n');
}

Answer 1

It doesn't. It just modifies the browser DOM.

It is up to the browser to serialise the DOM to HTML or XHTML as it desires when using innerHTML. Different browsers act differently.

Answer 2

All browsers normalize HTML code while building their DOM tree. So, javascript gains access to already normalized DOM. With all tags properly closed and such.