获取json / jsonp数据

I have a problem with JSON query.

I research on the forum and a lot of other websites to find how to fix the problem, but I used probably all of the options to repair my script...

At the moment my script:

    jQuery.ajax({
    url: "http://target.xyz/?f=json",
    dataType: 'JSONP',
    jsonpCallback: 'callback',
    type: 'GET',
    success: function (data) {
        console.log(data);
    }
});

Before the script, I use normal JSON but I saw:

XMLHttpRequest cannot load http://target.xyz/?f=json. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://mypage.xyz' is therefore not allowed access.

When I use JSONP on my target website, I get data but website returned:

one error Uncaught SyntaxError: Unexpected token :

Response data:

{
    "date" : "2017-05-29",
    "gold" : "1267.00",
    "silver" : "17.39",
    "platinum" : "956.05"
}

Please give me some advice or links. Thanks.

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