I am trying to make a JSONP request to a server. This is my code:
$.ajax({
type: 'GET',
url: myURL,
async: false,
crossDomain: true,
dataType: 'jsonp',
jsonpCallback: 'jsonCallback',
headers: {
'Accept': 'application/json', //this is required by the server
'key': key
},
success: function() {
alert('1');
},
error: function() {
alert('2');
},
complete: function(){
alert('3');
}
});//code indentation
When I run the code it errors. But if I open the developers tools in Chrome (ctrl+shift+I) I can see the request under "network". Clicking on it shows the correct response (and shows the request was accepted).
Apologies is there is a really obvious solution (I have tried searching, but with no luck), but at this point I am well and truly baffled. Any help would be really appreciated.
::EDIT::
changing the error function to:
error: function() {
console.log('error', arguments);
},
returned the message "jsonCallback was not called" Thanks to Aaron Digulla below.
The response from the server is JSON, not JSONP (checked with JSONlint)
When you say "it errors", my guess is that you get alert(2). To find out why, log the function arguments to the console:
...
error: function() {
console.log('error', arguments);
},
...
jQuery will pass additional information (like the error message) to the function. That should help you understand why it fails.
The same is true for the success function which gets the server response, for example.
[EDIT]
I get the error
jsonCallback was not called
That means your server isn't returning JSONP. JSONP looks like name({...}) while normal JSON looks like {...}. Please check your server's configuration and make sure it actually supports JSONP and that the response looks correct.
I should have seen this from your code:
dataType: 'jsonp'
headers: {
'Accept': 'application/json', //this is required by the server
}
That means you're sending a JSONP/JSON mix which can't work. If you use a certain dataType, then let jQuery build the correct headers.
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