如下所示：
<script type="text/javascript">
var arr = new Array(3) ;
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
document.write(arr.join() + "
");//默认情况下不提供分隔符，分隔符是“，”号;
document.write(arr.join("."));
如下所示：
<script type="text/javascript">
var arr = new Array(3) ;
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
document.write(arr.join() + "
");//默认情况下不提供分隔符，分隔符是“，”号;
document.write(arr.join("."));