1.使用sort()将数组进行排序，代码如下：

<script type="text/javascript">
 var myarr1 = new Array("Hello","John","love","JavaScript");
 var myarr2 = new Array("80","16","50","6","100","1");
 document.write(myarr1.sort()+"<br>");
 document.write(myarr2.sort());
</script>

运行结果：

Hello,JavaScript,John,love
1,100,16,50,6,80

问题：上面的例子的结构为什么是这样的呢？