JSONP Ajax语法

Question

I am trying to alert the visitor of my webpage with a country code provided by a JSONP endpoint. However, I cannot seem to get this working! And all the answers on the web seem confusing!

The following is returned from the endpoint:

{
    "pcCartCt": 0,
    "pcCountryCode": "au",
    "pcCountrySite": "WWW",
    "pcExpDomCt": 0,
    "pcFirstName": "",
    "pcIsCdc": false,
    "pcIsDiscount": false,
    "pcIsGdEmployee": false,
    "pcIsTrusted": false,
    "pcLanguageCookie": "en-us",
    "pcModalData": "",
    "pcRepEmail": "",
    "pcRepExt": "",
    "pcRepName": "",
    "pcSelectedCurrFullDesc": "United States Dollar $ (Transactional)",
    "pcSelectedCurrType": "USD",
    "pcSetLanguageLogo": true,
    "pcShopperId": ""
}

For it to work, I first need to specify a prog_id of "myprogid" and a callback function. In the callback, I need an alert message containing pcCountryCode.

How do I do this?

Answer 1

The endpoint should return:

myprogid({
    "pcCartCt": 0,
    "pcCountryCode": "au",
    "pcCountrySite": "WWW",
    "pcExpDomCt": 0,
    "pcFirstName": "",
    "pcIsCdc": false,
    "pcIsDiscount": false,
    "pcIsGdEmployee": false,
    "pcIsTrusted": false,
    "pcLanguageCookie": "en-us",
    "pcModalData": "",
    "pcRepEmail": "",
    "pcRepExt": "",
    "pcRepName": "",
    "pcSelectedCurrFullDesc": "United States Dollar $ (Transactional)",
    "pcSelectedCurrType": "USD",
    "pcSetLanguageLogo": true,
    "pcShopperId": ""
});

I don't understand your question about parsing multiple parameters. JSONP just expects one special parameter: callback=myprogid. This parameter should be used as the name of the function at the beginning of the response.