No 'Access-Control-Allow-Origin' header is present on the requested resource.

[YaakovHatam]

when i'm trying to get data from my javascript code while i develop (localhost), is it possible to allow ?

[codeofsumit]

you have to use jsonp. I do it too from localhost and it works.

[cbilliau]

I keep getting the "No 'Access-Control-Allow-Origin' header is present on the requested resource." error when I use jsonp and am using a local host. Is a different host/server required for access?

[ETNOL]

Can you add a snippet/gist of your ajax call?

[cbilliau]

I get the error when I run it from a local server (python and Atom.io http://atom.io/ app). Would that be the problem?

code begin: // get ticker symbol modApi.getTickerSymbol = function(name) { var url = "http://dev.markitondemand.com/MODApis/Api/v2/Lookup/jsonp" var request = { input: name, callback: "my_function" }

return $.getJSON(url, request);

}; code end

Chris

On Jun 16, 2016, at 3:00 PM, Eric Nolte notifications@github.com wrote:

Can you add a snippet/gist of your ajax call?

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/markitondemand/DataApis/issues/23#issuecomment-226581179, or mute the thread https://github.com/notifications/unsubscribe/AHGx3AKJCWzmcBDXhwUhANMZrqYfLlSHks5qMZ01gaJpZM4Gcdf-.

[ETNOL]

To get you a quick answer, the problem appears to be getJSON not handling the request as a jsonp dataType.

According to jQuery's docs:

JSONP

If the URL includes the string "callback=?" (or similar, as defined by the server-side API), the request is treated as JSONP instead. See the discussion of the jsonp data type in $.ajax() for more details.

And the requested url using .getJSON looks like:

http://dev.markitondemand.com/MODApis/Api/v2/Lookup/jsonp?url=http%3A%2F%2F…is%2FApi%2Fv2%2FLookup%2Fjsonp&input=F&callback=my_function&dataType=jsonp

Which certainly looks like it should be handled as JSONP. However, in practice, it isn't. So I'd recommend just doing the longhand $.ajax call for now:

modApi.getTickerSymbol = function(name) {
    var url = "http://dev.markitondemand.com/MODApis/Api/v2/Lookup/jsonp"
    var request = {
        url: url,
        input: name,
        callback: "my_function",
        dataType: 'jsonp'
    }

    return $.ajax(request);
};

[cbilliau]

Thank you.

Chris Billiau

On Jun 16, 2016, at 3:21 PM, Eric Nolte notifications@github.com wrote:

To get you a quick answer, the problem appears to be getJSON not handling the request as a jsonp dataType.

According to jQuery's docs:

JSONP

If the URL includes the string "callback=?" (or similar, as defined by the server-side API), the request is treated as JSONP instead. See the discussion of the jsonp data type in $.ajax() for more details. And the requested url using .getJSON looks like:

http://dev.markitondemand.com/MODApis/Api/v2/Lookup/jsonp?url=http%3A%2F%2F…is%2FApi%2Fv2%2FLookup%2Fjsonp&input=F&callback=my_function&dataType=jsonp Which certainly looks like it should be handled as JSONP. However, in practice, it isn't. So I'd recommend just doing the longhand $.ajax call for now:

modApi.getTickerSymbol = function(name) { var url = "http://dev.markitondemand.com/MODApis/Api/v2/Lookup/jsonp" var request = { url: url, input: name, callback: "my_function", dataType: 'jsonp' }

return $.ajax(request);

}; — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or mute the thread.