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