jQuery Ajax jsonp 跨域

js文件

<script src='jquery.js'></script>

<script>

$(document).ready(

function()

{

$.ajax({         

type:'GET',    

dataType: "jsonp",          

url: "http://xxx.com/xxx.php?param="+param,          

success: function(jsonp)

{

    alert(jsonp.uname);

}

});

});

</script>

 

 

 

php文件

 

$callback = $_GET['callback'];

$arr = array('uname'=>'xxx');

echo "{$callback}(".json_encode($arr).")";