jquery跨域请求jsonp

header(‘Content-Type:application/json; charset=utf-8‘);
$arr = array(‘a‘=>1, ‘b‘=>2, ‘c‘=>3);
$json = json_encode($arr);
$callback = $_GET[‘callback‘];
echo $callback."($json)";
//注意callback是js那边传来的参数名称

 $.getJSON(‘http://192.168.151.126/test?callback=?‘,function(data){
    alert(data);
 });

$.ajax({
    url:"http://192.168.151.126:8031/test",
    dataType:‘jsonp‘,
    data:‘‘,
    jsonp:‘callback‘,
    success:function(result){
        alert(result);
    }
});