通过javascript调用php函数

Ok, I am trying to test this jQuery. I want to run my other php file from ajax.

<script type="text/javascript">

var switchOn = function() {
  $.ajax({
    url: '../remote/test.php',
    type:'POST',
    dataType:'text',
    data: {test: 'Hello there!'},
    success: function(data) {
      document.write(data);
    }

  });
}


//Button functions

function changeState1()
{
    if(window.document.myform.switch1[0].checked){
            window.document.myform.switch1[1].checked = true;
            document.myform.changeStateButton1.value = "Turn On";
            switchOn();

    }else{
            window.document.myform.switch1[0].checked = true;
            document.myform.changeStateButton1.value = "Turn Off";
        switchOn();

    }
}

function changeState2()
{
    if(window.document.myform.switch2[0].checked){
            window.document.myform.switch2[1].checked = true;
            document.myform.changeStateButton2.value = "Turn On";


    }else{
            window.document.myform.switch2[0].checked = true;
            document.myform.changeStateButton2.value = "Turn Off";

    }
}

function changeState3()
{
    if(window.document.myform.switch3[0].checked){
            window.document.myform.switch3[1].checked = true;
            document.myform.changeStateButton3.value = "Turn On";


    }else{
            window.document.myform.switch3[0].checked = true;
            document.myform.changeStateButton3.value = "Turn Off";

    }
}

function changeState4()
{
    if(window.document.myform.switch4[0].checked){
            window.document.myform.switch4[1].checked = true;
            document.myform.changeStateButton4.value = "Turn On";


    }else{
            window.document.myform.switch4[0].checked = true;
            document.myform.changeStateButton4.value = "Turn Off";

    }
}


</script>

<form name="myform" action="index.php?p=remotecontrol" method="POST">
<b>On/Off</b>
<br>
Switch 1
<br>
<input type="radio" name="switch1" onClick="window.document.myform.switch.value = 'On'">
<input type="radio" name="switch1" onClick="window.document.myform.switch.value = 'Off'">
<input type="button" id="changeStateButton1" name="changeStateButton1" value="Turn On" onClick="changeState1()">
<br>
Switch 2
<br>
<input type="radio" name="switch2" onClick="window.document.myform.switch.value = 'On'">
<input type="radio" name="switch2" onClick="window.document.myform.switch.value = 'Off'">
<input type="button" id="changeStateButton2" name="changeStateButton2" value="Turn On" onClick="changeState2()">
<br>
Switch 3
<br>
<input type="radio" name="switch3" onClick="window.document.myform.switch.value = 'On'">
<input type="radio" name="switch3" onClick="window.document.myform.switch.value = 'Off'">
<input type="button" id="changeStateButton3" name="changeStateButton3" value="Turn On" onClick="changeState3()">
<br>
Switch 4
<br>
<input type="radio" name="switch4" onClick="window.document.myform.switch.value = 'On'">
<input type="radio" name="switch4" onClick="window.document.myform.switch.value = 'Off'">
<input type="button" id="changeStateButton4" name="changeStateButton4" value="Turn On" onClick="changeState4()">
<br>

</form>

This is my other php file.

<?php
item1 = $_REQUEST['test'];

    echo $item1;


?>

I am sure that the code gets to the ajax function, but then there are nothing happening on my page. There are supposed to be an echo from the other php file. The test.php is in Sites/remote, which are the same directory the first file are. I have tried url '../test.php' and '../remote/test.php'. No differences...

from the code you posted it seems that you have the PHP functions declared, but you never call them.

in your php file you should also have something similar to:

if (isset($_GET['switch']))
{
    $switch=$_GET['switch'];
    if ( "something" == $switch )
    {
        setSwitchOn($switch);
    }
    else
    {
        if ( "something else" == $switch )
        {
            setSwitchOff($switch)
        }
        else
        {
            // some other code
        }
    }
}

callPage('setSwitch.php?switch='+targetSwitch ....

callPage('remote/setSwitch.php?switch='+tar ....

you have 2 setSwitch.php , 1 in remote and 1 in same folder

AND

switch='+targetSwitch,document.getElementById(targetId)

just pass targetId than how to know it off or on..maybe

switch='+targetSwitch,document.getElementById(targetId)+'&acrion=off'

AND

function callPage(url, div){ //need 2 var