form action="<%=request.getContextPath()%>/duanxin/manager.jsp?oper=login" onsubmit="return validate_form(this)" method="post"><input name="acction" type="hidden" value="2" />用form 調用兩個js函數<script type="text/javascript">function validate_required(field,alerttxt){with (field){if (value==null||value==""){alert(alerttxt);return false}else {return true}}}</script><script type="text/javascript">function validate_form(thisform){with (thisform){if (validate_required(code," 用戶名不能為空!")==false){code.focus();return false}if (validate_required(end," 密碼不能為空!")==false){end.focus();return false}}}</script>