1,HTML source code£º <html> <head> <title>How to use Vector</title> </head> <body> <script src="jsjava.js"></script> <script> var vector=new Vector(); vector.addElement(new Date()); vector.addElement("test"); vector.add(new Integer(5)); var date=vector.elementAt(0); document.write((date instanceof Date)+"<br>"); var i=vector.get(2); document.write((i instanceof Integer)+"<br>"); document.write(vector.indexOf("test")+"<br>"); document.write("vector:"+vector); </script> </body> </html> 2,The display:

true true 1 vector:Sun Sep 9 18:57:11 UTC+0800 2007,test,5