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Issue with JSON & Ajax request

in Using jQuery • 6 years ago

Hi!

I try to get some data from one of those APIs out there..
What I can see in the documentation, this should be written something like the code below.
I got the data back in Postman, using the URL (with my own api Key), but in google chrome I just 'error ' got Unexpected token : and {"StatusCode":0," - btw, not sure what I should place in the headers..?

Any one that could guide me here?

Thanks in advance!

$(function(){
$.ajax({
async: true,
dataType: 'json',
crossDomain: true,
url: "https://api.sl.se/api2/realtimedeparturesV4.json?key=xxxxx&siteid=9192&timewindow=60?callback=?",
method: "GET",
headers: {
"Accept": "application/jsonp;odata=verbose",
},
})
.done(successFunction)
.fail(failFunction)
function successFunction(data){
console.log('ok..')
}
function failFunction(request, textStatus, errorThrown) {
console.log('not ok.. ');
}
});

Replies(4)

jakecigar

Re: Issue with JSON & Ajax request

6 years ago

Your URL did not return JSONP. Check with your provider. Maybe they don’t support JSONP at all, maybe they have a workaround.

JΛ̊KE

watusiware

Re: Issue with JSON & Ajax request

6 years ago

It looks like you are out of luck. You have to use a server program.

I found an NPM module for working with their API on a server.

https://www.npmjs.com/package/sl-api#why-is-this-module-needed

At the bottom of the documentation it states:

Can this module be used in the browser?

No. The APIs does not support JSON-P or CORS.

I was not able to find the documentation for the API itself. Post a link.

Since it appears they do not support JSON-P or CORS, you should read their terms of service carefully and make sure you are in compliance. If they wanted/allowed access to the API from browsers, they would support either JSON-P or CORS.

In any case, if the above is true, then accessing the API from the browser is simply not possible.

It might be possible (without a service) using some hybrid mobile app platforms. But it might not be in compliance with their terms of service!

watusiware

Re: Issue with JSON & Ajax request

6 years ago

I found the documentation for the API itself.

I assume you know that you will need a license and to get a key from them.

It appears that you need to make requests from your server in order to aggregate requests and minimize the burden on their servers. When you get a license, you will get a key to use in your requests. You can understand why they would want you to keep the key safe on your server, and not hand it out to every user in your web pages! This is quite common with this sort of API, which is why I suspected it already.

https://translate.google.com/translate?hl=en&sl=sv&u=https://www.trafiklab.se/api&prev=search

drwat21

Re: Issue with JSON & Ajax request

6 years ago

Hi, yes thanks. Sure, I got my own key but after litte more research it looks like the API does'nt support JSONP, even if I can find that information super clearly. Couldnt find a workaround on the client side fore this so I'll go on to some other projects instead. Thanks guys!

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Re: Issue with JSON & Ajax request

Re: Issue with JSON & Ajax request

Can this module be used in the browser?

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