getting attr href from string

getting attr href from string

I am trying to get a href attr from variable msg. The problem is that the msg consists of not only <a element but it contains also <p element and because of that attr doesn't give any value.

var msg="<p><a href='/users/'>Username</a> Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
var href=$(msg).attr('href');

Does anybody any idea how I can get the value of href from the above example?

Thank you