题目要求：
要求：写一个省市区（或者年月日）的三级联动，实现地区或时间的下拉选择。
实现技术：php ajax
实现：省级下拉变化时市下拉区下拉跟着变化，市级下拉变化时区下拉跟着变化。
使用chinastates表查询
主界面
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script src="jquery-1.11.2.min.js"></script>
</head>
<body>
<h1>三级联动</h1>
<select id="sheng"></select>
<select id="shi"></select>
<select id="qu"></select>
</body>
<script type="text/javascript">
$(document).ready(function(e) {
sheng();
shi();
qu();
$("#sheng").change(function(){
shi();
qu();
});
$("#shi").change(function(){
qu();
});
});
function sheng() {
var areacode = "0001";
$.ajax({
async:false,
url: "liandongjiazai.php",
data: {areacode: areacode},
type: "POST",
dataType: "TEXT",
success: function (data) {
var str = "";
var hang = data.split("|");
for (var i = 0; i < hang.length; i++) {
var lie = hang[i].split("^");
str = str + "<option value=‘"+lie[0]+"‘>" + lie[1] + "</option>";
}
$("#sheng").html(str);
}
});
}
function shi() {
var areacode = $("#sheng").val();
$.ajax({
async:false,
url:"liandongjiazai.php",
data:{areacode:areacode},
type:"POST",
dataType:"TEXT",
success: function(data){
var str = "";
var hang = data.split("|");
for(var i=0;i<hang.length;i++)
{
var lie = hang[i].split("^");
str = str+"<option value=‘"+lie[0]+"‘>"+lie[1]+"</option>";
}
$("#shi").html(str);
}
});
}
function qu() {
var areacode = $("#shi").val();
$.ajax({
url:"liandongjiazai.php",
data:{areacode:areacode},
type:"POST",
dataType:"TEXT",
success: function(data){
var str = "";
var hang = data.split("|");
for(var i=0;i<hang.length;i++)
{
var lie = hang[i].split("^");
str = str+"<option value=‘"+lie[0]+"‘>"+lie[1]+"</option>";
}
$("#qu").html(str);
}
});
}
</script>
</html>
处理
<?php
$areacode = $_POST["areacode"];
include("LZY.class.php");
$db= new LZY();
$sql = "select * from chinastates WHERE parentareacode=‘{$areacode}‘ ";
$arr = $db->Query($sql);
$str = "";
foreach($arr as $v)
{
$str = $str.implode("^",$v)."|";
}
$str = substr($str,0,strlen($str)-1);
echo $str;
时间： 2024-10-11 01:21:36