本篇内容介绍了“Ajax级联菜单的实现方法”的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!
1.Ajax.html
代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Ajax</title>
<script type="text/javascript">
function loadXMLDoc(txt) {
var xmlhttp;
if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
}
else {// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
var citys = xmlhttp.responseText.split(',');
document.getElementById("citys").length = 1;
for (i = 0; i < citys.length - 1; i++) {
document.getElementById("citys").add(new Option(citys[i], citys[i]));
}
// document.getElementById("myDiv").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("GET","ajax/getdata.aspx?pro="+txt, true);
xmlhttp.send();
}
</script>
</head>
<body>
<h3>AJAX</h3>
<select id="Select1" onchange="loadXMLDoc(this.value)">
<option>请选择省份</option>
<option value="1">江苏</option>
<option value="2">上海</option>
</select>
<select id="citys">
<option>请选择城市</option>
</select>
<div id="myDiv"></div>
</body>
</html>
2.getdata.aspx.cs
代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class ajax_getdata : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string[] js=new string[]{"南京", "苏州", "常州" , "无锡" , "镇江"};
string pro=Request.QueryString["pro"];
if (pro == "1")
{
string temp = "";
for (int i = 0; i < js.Length; i++)
{
temp = temp + js[i];
temp = temp + ",";
}
Response.Write(temp);
}
else
Response.Write("");
}
}
“Ajax级联菜单的实现方法”的内容就介绍到这里了,感谢大家的阅读。如果想了解更多行业相关的知识可以关注亿速云网站,小编将为大家输出更多高质量的实用文章!
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。