日期:2014-05-17  浏览次数:20751 次

一个小功能
我用$TagUtil.options($list,"id","proname",$!extends) 取得了一些值(名称)(在下拉列表里显示),与此对应的有一些编号如123等等,我想在网页也上选择名称后直接显示对应的编号。咋办呢?

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既然能获得值,获得编号也不是问题吧!
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啥意思啊
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selected
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对象的方式。。。如:person对象。包含id和名称name字段。。。

循环将名称person.name显示在option中供用户选择,选中以后显示对应的编号person.id就行了啊。。
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ajax省市联动啊
代码:根据你的需求自己改改:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'province.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<script type="text/javascript">
function loadXMLDoc()
{
xmlhttp = null;
var country = document.getElementById("country");
country.length = 1;
country.selectedIndex = 0;
var province = document.getElementById("province");
if(province.value == ""){
return ;
}
var url="http://localhost:8080/Ajax_Province/GetProvince?&province="+encodeURIComponent(province.value);
if (window.XMLHttpRequest) {// code for Firefox, Mozilla, IE7, etc.
xmlhttp = new XMLHttpRequest();
} else if (window.ActiveXObject) {// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlhttp != null) {
xmlhttp.onreadystatechange = state_Change;
xmlhttp.open("post", url, true);
xmlhttp.send(null);
} else {
alert("Your browser does not support XMLHTTP.");
}
}

function state_Change() {
var province = document.getElementById("province");
var country = document.getElementById("country");
if (xmlhttp.readyState == 4&&xmlhttp.status == 200) {// 4 = "loaded"
var serviceData = xmlhttp.responseText;
if(serviceData == null||serviceData == ""){
return;
}
var s = serviceData.split(",");
for(var i=0;i<s.length-1;i++){
country.options[i+1] = new Option(s[i],s[i]);
}
}
}




</script>
</head>

<body>
出生地:<select id="province" onchange="loadXMLDoc()">
<option value="">------请选择省-----</option>
<option value="江西省">江西省</option>
<option value="江苏省">江苏省</option>
<option value="浙江省">浙江省</option>
<option value="山东省">山东省</option>
<option value="辽宁省">辽宁省</option>
<option value="福建省">福建省</option>