<%...@ page contentType="text/html;charset=GBK"%><SCRIPT language=javascript>...var N;N=1function addYXDS()...{var obj = document.getElementsByName("YXDS")[document.getElementsByName("YXDS").length-1];//obj.insertAdjacentHTML("afterend","<br/><input type="text" name="text1">");obj.insertAdjacentHTML("afterend","<br/><input size="40" type="text" name=YXDS>");N=N+1}</SCRIPT><form action=do.jsp><INPUT id=YXDS0 size=40 name=YXDS> <BR><INPUT onclick=addYXDS() type=button value=添加 name=Submit3><INPUT onclick="javascript:alert(document.getElementsByName('YXDS').length);" type=button value=aaa name=Submit3><input type=submit></form><!--do.jsp--><%...@ page contentType="text/html;charset=GBK"%><%...String a[]=request.getParameterValues("YXDS");out.print("v1="+a[0]+"<BR>");out.print("v2="+a[1]+"<BR>");out.print("个数="+a.length);%>