我还想要一个包含多个选择的列表框以及上面的代码,但它不能正常工作
$ cnty 是变量(listbox - multiselection)。
下面是我使用的完整ajax函数。
<script language="javascript" type="text/javascript">
function ajaxFunction(){
var ajaxRequest; // The variable that makes Ajax possible!
try{
// Opera 8.0+, Firefox, Safari
ajaxRequest = new XMLHttpRequest();
} catch (e){
// Internet Explorer Browsers
try{
ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try{
ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e){
// Something went wrong
alert("Your browser broke!");
return false;
}
}
}
// Create a function that will receive data sent from the server
ajaxRequest.onreadystatechange = function(){
if(ajaxRequest.readyState == 4){
//document.myForm.time.value = ajaxRequest.responseText;
document.getElementById("result").innerHTML=ajaxRequest.responseText
}
}
var dav = document.getElementById('dav').value;
var pathogen = document.getElementById('pathogen').value;
var topic1 = document.getElementById('topic1').value;
var ind1 = document.getElementById('ind1').value;
var subindg1 = document.getElementById('subindg1').value;
var cnty = document.getElementById('countryRF').value;
var queryString = "?dav=" + dav + "&pathogen=" + pathogen + "&topic1=" + topic1 + "&ind1=" + encodeURIComponent(ind1) + "&subindg1=" + encodeURIComponent(subindg1) + "&cnty=" + encodeURIComponent(cnty);
ajaxRequest.open("GET", "sortby.php" + queryString, true);
ajaxRequest.send(null);
}
</script>
sortby.php页面
<?php
$con = mysql_connect("localhost","root","adminpp");
mysql_select_db("pdata", $con);
$datav=$_GET["dav"];
$pathogen=$_GET["pathogen"];
$topic1=$_GET["topic1"];
$ind1=$_GET['ind1'];
$subindg1=$_GET["subindg1"];
$cnty=$_GET['cnty'];
echo $subindg1;
echo $cnty;
?>
答案 0 :(得分:1)
有多种方法可以通过Ajax将多选列表传递给服务器。这只是其中之一......甚至可能都不是最好的。 :)
我将在整个过程中使用变量名称multisel
,以便您可以轻松找到它并查看如何使用它。
将此功能添加到您的javascript
function loopSelected(selObj)
{
var selectedArray = new Array();
var i;
var count = 0;
for (i=0; i<selObj.options.length; i++) {
if (selObj.options[i].selected) {
selectedArray[count] = selObj.options[i].value;
count++;
}
}
return selectedArray;
}
现在,在变量之后将以下行添加到ajaxFunction
。
var selObj = document.getElementById('multistore');
var multisel = loopSelected(selObj).join('~'); // join array into a string
最后,在PHP中,添加这些行
$multisel = $_GET['multisel'];
$multisel_array = explode('~',$multisel); // split the items into an array
var_dump($multisel_array);
此时所有选定的项目都在$multisel_array
。