Question

我有像国家/州和城市一样的下拉链。有没有办法等到下降人口继续进行？比如首先加载国家然后根据国家的选择然后加载州和城市....

function populateLists(listType) {
    // on success do this:
    $.ajax({
    type:"POST",
    url:"Wizard_Using_PageMethod.aspx/GetCountry",
    data: "{}",
    contentType: "application/json; charset=utf-8",
    dataType:"json"}
});

[WebMethod]
public static CountryList GetCountry()
{
    CountryList country = new CountryList();
    ///go to db and get the data
    return country;
}

Answer 1

你可以这样做

$('#cb_country').change(function(){
    var id=$(this).val();
    $.get('getCity.php',{id:id},function(data){
        $("#cb_city").html(data);
    });
});

getCity.php：

<?php
require('../conn.php');

$id=$_GET['id'];
$Q=mysql_query("SELECT * FROM city WHERE CountryID='".$id."' ORDER BY Cityname ASC");

do{
    echo "<option value='".$row['CityID']."'>".$row['CityName']."</option>";
}
while($row=mysql_fetch_assoc($Q));

加载国家/州/市

1 个答案: