to for cross domain jsonp

 

I looked everywhere here for this. I need just a simple "how-to" pull jsonp cross domain. I'm using jQuery 1.5.1.

I tried the following in a program on another site: 

$.getJSON("http://www.mydomain.com/testjson.json?jsoncallback=?", function(data) {
    alert("I'm hitting this.");
}

This doesn't work at all.

Is there a way of just doing a simple cross domain jquery JSONP call?

Thanks

JSONP requires the cooperation of the server to succeed. You cannot pull random pages using JSONP and expect them to succeed; the server needs to know:

  • It needs to formulate a JSONP response, rather than a JSON response.
  • It needs to know the name of the function to wrap the response around.

    • If you're unsure on why the server needs to know these, or what the differences are between JSON and JSONP, you should read up on them; or the whole thing will make no sense. For starters, check out Can anyone explain what JSONP is, in layman terms? and http://en.wikipedia.org/wiki/JSONP.

    After understanding this a little more, you'll probably find the server is returning 

    { "key": 1, "bar": "foo" }

    (which is valid JSON), rather than: 

    someCallback({ "key": 1, "bar": "foo" })

    which is a JSONP response.

    If you try these http://terrasus.com/detail.jsp?articleID=396 step by step it will work fine. if you produce jsonp response you should get the callback value and set it to your response dynamically. This article has a detail explanation

    链接地址: http://www.djcxy.com/p/47496.html

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