Running on Chrome I get this error message:
Uncaught SyntaxError: Unexpected token
This is the part of my code which is responsible for the request:
function wetter() {
$.ajax({
'Accept': 'application/json',
type: 'GET',
url: '[here comes the url',
dataType: 'jsonp',
success: function (data) {
//content
}
});
};
You are trying to make a jsonp request to a script that sends json, similar to this. You cant just drop a p after the json and expect it to work.
The datatype it's receiving is probably not what it expects. You may be returning a JSON object while the expected result is JSON with padding (JSONP). You can either try returning JSONP type data or change the datatype in your code above to JSON.
Related
I am trying to fetch data from text file which resides on server. I have access of that location and able to see content when I put URL in browser tab.
I am trying to make AJAX call and get file content, but I am getting Error: Uncaught SyntaxError: Unexpected identifier
Code
function logResults(json){
console.log(json);
}
$.ajax({
url: u,
dataType: "jsonp",
jsonpCallback: "logResults"
});
on console,
I tried below code too, but same result,
$.ajax({
type: 'GET',
url: u,
crossDomain: true,
dataType: 'jsonp',
async: false,
headers: {
"Access-Control-Allow-Origin": "*"
},
success: function(succ) {
console.log("Success: ", succ)
},
error: function(err) {
console.log("Error: ", err)
}
});
This code is always going into error block.
You said:
dataType: "jsonp",
But the URL is responding with:
Deployment automatically finished…
Which is not JSONP, it is plain text.
You get the error when it tries to execute the plain text as JSONP.
Don't put wrong information in the dataType field.
async: false,
That's deprecated. Don't use it. It's also pointless since you are using callbacks.
It's also incompatible with JSONP so it is ignored (until you remove the incorrect dataType).
crossDomain: true,
This has no effect unless you are making a:
non-JSONP request
to the same origin
which gets redirected to a different origin
… which is very rare.
headers: {
"Access-Control-Allow-Origin": "*"
},
Access-Control-Allow-Origin is a response header. It doesn't belong the request. Trying to add it to the request will cause extra problems as it will make the request preflighted.
(At least, that would be the case if you hadn't said dataType: 'jsonp' because adding request headers is incompatible with JSONP).
All you need on the client
The only code you need on the client is:
function logResults(result){
console.log(result);
}
$.ajax({
url: u,
success: logResults
});
The server you are requesting the data from will need to use CORS to grant you permission to access it if it is a cross-origin request.
It is because you have added dataType as jsonp, so that it will try to parse the response to JSON and if the response is not a JSON it will throw error.
I'm trying to get images from Instagram public api via ajax and JSONP:
var target = https://www.instagram.com/p/BP3Wu_EDXsjdT5Llz13jFv2UeS0Vw0OTxrztmo0/?__a=1?callback=?';
$$.ajax({
type: "GET",
dataType: 'json',
crossDomain: true,
url: target,
success: function(data){
console.log(data);
},
error: function(xhr,status){
console.log("Error"+status);
}
});
I'm getting: Uncaught SyntaxError: Unexpected token <.
What's wrong?
Thanks
A few mistakes...
var target = 'https://www.instagram.com/p/BP3Wu_EDXsjdT5Llz13jFv2UeS0Vw0OTxrztmo0/?__a=1&callback=';
Changes: Missing ' at the beginning and changed second ? with &
Should work fine
That API with ?__a=1 is undocumented API and does not support JSONP, so you cannot make client side API call using AJAX, you have to make a server side http request and it will work.
I am trying to do AJAX using jQuery with an ODATA REST service provided by an SAP backend system.
$.ajax({
type: 'GET',
url: 'http://sapxx.sapms/sap/opu/odata/.../',
async: true,
dataType: 'jsonp',
username: 'username',
password: 'password',
crossDomain: true,
success: function() {
alert('Done.');
},
error: function() {
alert('Error.');
},
});
The request returns status 200 and I get a response from the server which is called something like "?callback=jQuery3100687..." and contains xml code. All this is visible in the Chrome debugger. But after the successful HTTP Request I get the aforementioned error
Uncaught SyntaxError: Unexpected token <
I suspect the error is due to the "dataType" parameter which is set to "jsonp" in the request. Is there any way to work around this error? The server can only respond using XML format. The request only works when the dataType is set to "jsonp", I guess because it enables CORS. After sending the request, I get the "Error" alert despite the 200 status.
You say you get an xml response from the server. Your ajax request is set up for jsonp, though:
dataType: 'jsonp',
Try this instead:
dataType: 'xml',
success: function(xml) {
//remainder of the code
}
If you set the dataType to jsonp, jQuery will try to parse the response as JSON. This results in errors, because the response ins't JSON.
I am calling a Cross Domain AJAX Request using JSONP. Now, i am able to make it work using CORS. But, i want to know why it is not happening with JSONP. I looked at other threads with similar problem but couldnt figure out why it is not working in my case.
Here is the code:
$.ajax({
type: "GET",
url: http://XXXX:8000/sap/bc/test_rest/jsonp_test?mode=S&ticket=123,
dataType: "jsonp",
jsonp: false,
jsonpCallback: "myJsonMethod",
success: function (data) {
alert(data);
},
error: function (httpReq, status, exception) {
alert(status + " " + exception);
}
});
Now, this calls my server, the data is populated and then i get an alert "parse error myJSONMethod was not called" on a callback URL http://xxxx:8000/sap/bc/test_rest/jsonp_test?mode=S&ticket=123&_=1470322282936
Additionally, in the console i get the error as Uncaught SyntaxError: Unexpected token :
The response structure is:
{"ROOT":{"CONTRACT":"40002356","ITEM":"000010","KUNNR":"0000004676","NAME":"REALTY EXECUTIVES","NET_PRICE":19.95,"GROSS_PRICE":19.95,"MATNR":"144","SQFEET":""}}
When i run this JSON Output on jsonlint it says it is a valid JSON. I don't know where the JSON is getting messed up.
Your data must be like this to be valid for JSONP:
myJsonMethod({"ROOT":{"CONTRACT":"40002356","ITEM":"000010","KUNNR":"0000004676","NAME":"REALTY EXECUTIVES","NET_PRICE":19.95,"GROSS_PRICE":19.95,"MATNR":"144","SQFEET":""}});
the responsetext must be valid js code and it will run immediately when the response is over.So if you write your code
{"ROOT":{"CONTRACT":"40002356","ITEM":"000010","KUNNR":"0000004676","NAME":"REALTY
EXECUTIVES","NET_PRICE":19.95,"GROSS_PRICE":19.95,"MATNR":"144","SQFEET":""}}
in a <script> tag,the console will throw an err like that
Hi guys I am doing project in html, jquery (localhost) to retrieve data from Server it is already running in localhost.
When I run below url in browser (default method is GET for browser) url_bar, I got the output perfectly in JSON format.
http://localhost:8080/xxx/yyy/st.json?callback=callback&_=1419402270660
But, when I call the above url in html file (calling implicitly the appropriate .js file)
ajax like below code :
var url_var = "http://localhost:8080/xxx/yyy/st.json";
$.ajax({
url : url_var,
method : "GET",
headers : {
'Accept': 'application/json',
'Content-Type' : 'application/json'
},
dataType: 'jsonp',
jsonpCallback: 'callback',
success : function(data){
console.log(data);
},
failure : function() {
alert("failure");
},
error : function(){
}
});
I got below error in console of browser
Uncaught SyntaxError: Unexpected token : st.json?callback=callback&_=1419400635006:1
Reason for "jsonp" format used in ajax is that to return the servlet response without the conflict of "Cross browser domain issue" .
Any way to resolve this. Alternate way also welcome. Thanks in advance guys.....