Why I Can not display "person name :"?
<pre><code>&lt;p id="display1"&gt;&lt;/p&gt;
&lt;p id="display2"&gt;&lt;/p&gt;



var person1= {
    name: 'John Smith',
    hobbies: ['surfing', 'diving']
};

$("#display1").append( "&lt;br/&gt;" + "person name :" + person1.name  + "&lt;br/&gt;");

var person2= clone(person1);

$("#display2").append( "&lt;br/&gt;" + "person name :" + person1.name  + "&lt;br/&gt;");
</code></pre>

<p><a href="http://jsfiddle.net/centerwow/sGK6u/" rel="nofollow">Demo jsFiddle</a></p>

<p>the above code siplay person1 name.</p>

<p>why it doesn't display person2 ?
Many thx.</p>
