Menyimpan larik respons ajax ke dalam variabel untuk digunakan di kemudian hari

<script type="text/javascript">
$(document).ready(function(){
    var x; 
    var y;
    $.ajax({
        url: 'ajaxload.php',
        dataType: "json", 
        success: function(data) { 
            x= data.posX;
            y= data.posX;
            alert (x+" "+y);  // I can se data but I need outside ajax call
        }
    });
    alert(x+" "+y); // You won't see anything, because this data isn't yet populated. The reason for this is, the "success" function is called when the ajax request has finished (it has received a response).
})
</script>

<script type="text/javascript">
$(document).ready(function(){
    var data = $.parseJSON($.ajax({
        url:  'ajaxload.php',
        dataType: "json", 
        async: false
    }).responseText); // This will wait until you get a response from the ajax request.

    // Now you can use data.posX, data.posY later in your code and it will work.
    var x = data.posX;
    var y = data.posY;
    alert(x+" "+y);
    alert(data.posX+" "+data.posY);
});
</script>

<script type="text/javascript">
   var x = '';
   var y = '';

   function sendAjax()
   {
        // your ajax call
        x= data.posX;
        y= data.posX;  
   } 
   sendAjax();
</script>