Simple Ajax cross-domain request

Recently encountered need for Ajax cross-domain requirements

First look at what kind of error will occur if you do not do any Ajax cross-domain requests that are handled specifically

Client code:

<script type= "Text/javascript" >    $.ajax ({        ' http://localhost/test/respone.php ',        ' Get ',        ' json ',        success:function  (res) {            console.log (res);        }    } );     </script>

Service-Side code:

<?phpecho Json_encode ([' name ' = ' ogq ', ' age ' =>18]);? >

Operation Result:

Tip: Failed to load http://localhost/test/respone.php:No ' Access-control-allow-origin ' header was present on the requested R Esource. Origin ' http://my.com ' is therefore not allowed access. Error

This is because the browser Ajax can not be caused by the cross-domain, the following is I find the data after a simple Ajax cross-domain request and return

Client code:

<script type= "Text/javascript" >    $.ajax ({        URL: ' http://localhost/test/respone.php ',        type: ' Get ',        dataType: ' Jsonp ',        success:function (res) {            console.log (res);        }    });    </script>

Yes, just the datatype: "JSON" changed to "Jsonp",

Then the server-side code:

<?phpecho $_request[' callback '], ' ('. Json_encode ([' name ' = ' ogq ', ' age ' =>18]), ') ';? >

At the request time, output results

So you can cross the domain normally.

PS: No drill down, can be used normally. Hee Hee

Simple Ajax cross-domain request