$("#country").change(function(){ $('#city').find('option').remove().end(); //clear the city ddl var country = $(this).find("option:selected").text(); alert(country); //do the ajax call $.ajax({ url:'getCity.php' type:'GET', data:{city:country}, dataType:'json', cache:false, success:function(data){ data=JSON.parse(data); //no need if dataType is set to json var ddl = document.getElementById('city'); for(var c=0;c<obj.length;c++) { var option = document.createElement('option'); option.value = obj[c]; option.text = obj[c]; ddl.appendChild(option); } }, error:function(jxhr){ alert(jxhr.responseText); } });});在您的getCity.php中
$country = $_GET['city'];//do the db query here$query = "your query";$result = mysql_query($query);$temp = array();while ($row = mysql_fetch_assoc($result)) { if(empty($temp)) { $temp=array($row['city']); } else { array_push($temp,$row['city']); }}echo (json_enpre($temp));
