Edit in JSFiddle

$(document).ready(function() {
      $(document).on('mouseover', '#message', function(event) {
        event.preventDefault();
        $("#message").text("I am fine");
    }).on('mouseleave', '#message', function(event) {
        event.preventDefault();
        $("#message").text("Hi How are you");
    });
});

<div id="message">
 Hi How are you
</div>