宝马娱乐在线城-宝马娱乐在线

来自 互联网络 2019-10-01 17:10 的文章
当前位置: 宝马娱乐在线城 > 互联网络 > 正文

php+ajax无刷新实现省、地、市三级联动

<select name="province" id="province" onchange="if(this.value != '') setCity(this.options[this.selectedIndex].value);">  
   <option value="">-请选择-</option>
   <?php教程
   $sql="select * from ptypes where sid=0 and ssid = 0";
   $result=mysql_query($sql,$conn) or die("返回数据记录出错!");
   while($row=mysql_fetch_object($result))
   {
       echo ("<option value='".$row->id."'>".$row->title."</option>");
   }
   ?>
</select> 一级
  
<select name="sid" id="sid" onchange="if(this.value != '') setssid(this.options[this.selectedIndex].value);" >    
<option value="">-请选择-</option>
</select> 二级

<html>
<head>
<meta http-equiv="Content-Type" c />
<script type="text/javascript">
var xmlHttp;
var requestType="";
function createXMLHttpRequest()
{
if(window.ActiveXObject)
{
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest)
{
  xmlHttp=new XMLHttpRequest();
}
}
function queryCity(citycode){
createXMLHttpRequest();
type="city";
var url="data.php?provincecode="+citycode;
xmlHttp.open("GET",url,true);
xmlHttp.onreadystatechange=handleStateChange;
xmlHttp.send(null);
}
function queryArea(citycode){
createXMLHttpRequest();
type="area";
var url="data.php?citycode="+citycode;
xmlHttp.open("GET",url,true);
xmlHttp.onreadystatechange=handleStateChange;
xmlHttp.send(null);
}
function handleStateChange(){
if(xmlHttp.readystate==4){
  if(xmlHttp.status==200){
   if(type=="city"){
    showcity();
   }else if(type="area"){
    showarea();
   }
  }
}
}
function showcity(){
document.getElementById("city").innerHTML=xmlHttp.responseText;
document.getElementById("area").innerHTML="";
}
function showarea(){
document.getElementById("area").innerHTML=xmlHttp.responseText;
}
</script>
</head>
<body>
<?
$conn=mysql_connect("localhost","root","2328725");
mysql_select_db("novel");
mysql_query("set names 'utf8'");
$sql="select * from province";
$result=mysql_query($sql);
echo "<from id='form1'>n";
echo "<select id='province' onchange='queryCity(this.options[this.selectedIndex].value)'>n";
echo "<option value='-1' selected>请选择省份</option>n";
while($row=mysql_fetch_row($result)){
  echo "<option value='$row[1]'>$row[2]</option>n";
}
echo "</select>n";
echo "<span id='city'></span>n";
echo "<span id='area'></span>n";
echo "</form>n";
?>

$sql="select * from ptypes where sid = 0 and ssid =0";
$result=mysql教程_query($sql,$conn) or die("查询数据库教程出错1");
while($row=mysql_fetch_object($result))
{
   $i=0;
   $rs2="";
   $sql2="select * from ptypes where sid='".$row->id."'";
   $result2=mysql_query($sql2,$conn) or die("查询数据出错2");
   while($row2=mysql_fetch_object($result2))
   {
       if ($i==0){
        $t="";
    }else{
        $t=",";
    }
       $rs2.=$t."{txt:'".$row2->title."',val:'".$row2->id."'}n";
    $n=0;
    $rs3="";
    $sql3="select * from ptypes where ssid='".$row2->id."'";
    $result3=mysql_query($sql3,$conn) or die("查询是数据库出错3");
    while($row3=mysql_fetch_object($result3))
    {
       if ($n==0)
    {
       $t1="";
    }else{
       $t1=",";
    }
    $rs3.=$t1."{txt:'".$row3->title."',val:'".$row3->id."'}n";
    $n=1;
    }
   
    echo("sidArr['".$row2->id."']=[".$rs3."];");
    $i=1;
   }
  
   echo("sidArr['".$row->id."']=[".$rs2."];");
}
?>
function setCity(province) {
       
         removeOptions(document.getElementById('sid'));
   removeOptions(document.getElementById('ssid'));
   setSelectOption('sid', "", '-请选择-');
   setSelectOption('ssid', "", '-请选择-');
         if (!sidArr[province] || sidArr[province]==""){
      
             document.getElementById('sid').disabled=true;
    document.getElementById('ssid').disabled=true;
   }else{
       document.getElementById('sid').disabled=false;
    document.getElementById('ssid').disabled=false;
             setSelectOption('sid', sidArr[province], '-请选择-');
   }
}
function setssid(province) {
         removeOptions(document.getElementById('ssid'));
   setSelectOption('ssid', "", '-请选择-');
         if (!sidArr[province] || sidArr[province]==""){
    document.getElementById('ssid').disabled=true;
   }else{
       document.getElementById('ssid').disabled=false;
             setSelectOption('ssid', sidArr[province], '-请选择-');
   }
}
</script>

</body>
</html>

 <?PHP

<select name="ssid" id="ssid">    
<option value="">-请选择-</option>
</select> 三级

本文由宝马娱乐在线城发布于互联网络,转载请注明出处:php+ajax无刷新实现省、地、市三级联动

关键词: