Develop Reference

jQuery ajax post is sending request using get method on ipad chrome

When this code runs on chrome on ipad, it ignores the type "POST" and sends the ajax request using the get method. Is it a compatibility issue? Seems like chrome doesnt support post ajax requests?
$.ajax({
type: "POST",
url: "/ajaxCall",
data: sentData,
success: success,
dataType: "text",
error: function (jqXHR, textStatus, errorThrown) {
console.log(errorThrown);
}
});

I was testing the page on k-tunnnel/v-tunnel. I found out that the problem is becaouse of these sites. Without tunneling, my calls reaches the server properly.

Calling External API with Javascript

I need to make a POST request to an external server from my webpage using Javascript. The body and response are both json. I can't figure out how to make this call or what tools to use. How do I make this call?
This is what I have so far using jQuery and ajax:
var body = '{"method":"getViews","params":{"filter":{"operator":"and","clauses":[{"operator‌​":"matches","value":"'+ inputValue +'"}]},"order":[{"field":"name","ascending":true}],"page":{"startIndex":0,"maxIt‌​ems":5}}}';
var response = $.ajax({
url: "http://" + environment + "/vizportal/api/web/v1/getViews",
method: "post",
dataType:'json',
data: JSON.stringify(body),
headers: {
'Content-Type': 'text/plain',
'X-XSRF-TOKEN' : XSRFToken,
'Cookie': 'workgroup_session_id='+workgroupSessionId+';XSRF-TOKEN='+XSRFToken
},
success:function(response){
alert("success");
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert("Status: " + textStatus); alert("Error: " + errorThrown);
}
});
It is throwing a alerts that just says "Status:" and "Error:"
The console says this "XMLHttpRequest cannot load http://[domain]/vizportal/api/web/v1/getViews. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://[domain]' is therefore not allowed access. The response had HTTP status code 405."

Are you the owner of the destination of the call? If yes, implement the CORS headers in server-side.
If no, you can fiddle using JSONP (it bypasses CORS) or you can even implement a server-side proxy that you own to route external requests (and of course, implement CORS there).
Check out the article on CORS in MDN if you want more information : HTTP access control (CORS) on MDN

You can use JQUERY and AjAX. You can send/get information information to/from your API either by post or get method.
It would be something like that:
$("#ButtonForm").click(function(){
$.ajax({
url:(Your url),
dataType:'json',
type: 'post',
data: yourForm.serialize(),
success:function(response){
** If yout API returns something, you're going to proccess the data here.
}
});
});
Ajax:
http://api.jquery.com/jquery.ajax/

You are violating the so called same-origin-policy here. Most browsers don't allow a script to access URLs that do not have the same hostname and port than the page where the script is located. This is a very strict security policy and has often been very difficult to overcome even for testing purposes.
Traditionally the easiest way to go around this has been to use your own web site as a proxy and forward the request through it to the external server. But if you don't have enough control on your own site to implement such a solution, things have been more complicated. If you search the Internet with "same-origin-policy", you'll find a lot of discussion on the topic and other ideas to solve it.
My first suggestion would be to check the "Access-Control-Allow-Origin" that your error message mentions, though I'm not familiar with it myself. It is related to a new scheme called CORS that has been added to W3C recommendations quite recently (2014), and seems to have a wide support in the newest versions of many browsers. Maybe we developers are finally getting some tools to work with this irritating issue.

When you want to use different domain ajax call then you need to use the JSONP datatype which will allow browser to do cross domain request.
Here is more document for the JSONP : https://learn.jquery.com/ajax/working-with-jsonp/
var body = '{"method":"getViews","params":{"filter":{"operator":"and","clauses":[{"operator‌​":"matches","value":"'+ inputValue +'"}]},"order":[{"field":"name","ascending":true}],"page":{"startIndex":0,"maxIt‌​ems":5}}}';
var response = $.ajax({
url: "http://" + environment + "/vizportal/api/web/v1/getViews",
method: "post",
dataType:'jsonp',
data: JSON.stringify(body),
headers: {
'Content-Type': 'text/plain',
'X-XSRF-TOKEN' : XSRFToken,
'Cookie': 'workgroup_session_id='+workgroupSessionId+';XSRF-TOKEN='+XSRFToken
},
success:function(response){
alert("success");
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert("Status: " + textStatus); alert("Error: " + errorThrown);
}
});

If you use jquery, use .post, or .ajax, to submit
$.post(url, data, callbackSuccess, callbackError);
more about these methods here http://api.jquery.com/jquery.ajax/
example:
var url = 'http://example.com/path/endpoint';
$.post(url, {name: 'Darlan', lastname: 'Mendonça'}, function(response){
// callback success
}, function(response) {
// callback error
});

Uncaught SyntaxError: Unexpected token : ajax call

So I'm trying to query the below json feed, however I keep getting the error in the topic.
I've searched around this site for possible answers however none that I've come across have worked so far. Commented out datatype and jsonp, jsonpCallback isnt it either, either is data, I've made sure that it validats via http://jsonformatter.curiousconcept.com/ and it does. I really dont know.
$.ajax({
type: 'GET',
url: 'http://raidbots.com/json/playerdata/us/mannoroth/usiris',
cache:true,
dataType: 'jsonp',
data: {
format: 'json',
},
success: ranks,
jsonpCallback:'callbackName',
error: function(data) { console.log(data); },
jsonp: false,
});
function callbackName(data){
console.log("jsonpCallback");
}
var ranks = function(data) {
console.log(data);
}
Thank you
-Art

The error is in your JSONp data because it's just JSON and not JSONp. JSONp requires the document to be valid JavaScript containing a function call.
If they don't support jsonp you need to use a proxy script (e.g. a php script on your server that retrieves the document) or ask them to send CORS headers so you can use a normal non-JSONp AJAX call to retrieve the data directly.

jQuery invalid label jsonp

I use jQuery to get php-script result with ajax-function. Problem is php-script is on the another domain, so I should use "jsonp" as returned dataType, BUT php-script returns json, not jsonp (maybe script is not correct) and I get syntax error. How can I handle it? I suppose, that I can somehow get json string before ajax-function handles it and rises error, is it possible?
This is my ajax function:
$.ajax(
{
type: "POST",
dataType: "jsonp",
url: "http://www.pecom.ru/bitrix/components/pecom/calc/ajax.php",
data: res,
error: function (xhr, ajaxOptions, thrownError) {
alert("error: " + xhr.status);
},
success: function (data) {
alert("Data Loaded: " + data)
}
}
)
Thank you!

The short answer is that you can't.
The longer one is that you have to set up some sort of proxying: make the request on the server side from a machine you control, transform the results to proper JSONP there, and connect to that server via AJAX.
(Or, in the very unlikely event that the target server supports CORS, you can use that instead of JSONP.)

How do i read simple json result with jquery and how to post new

I built a WCF service which produces JSON. I want to make an external website which uses this webservice. For now I am executing the WCF service over LAN by IIS, so I can connect to the service by going to http://myownaddress/blabla.svc/
I tried to learn some json and to get some results from my service.
For example if I want to use this method:
[OperationContract]
[WebInvoke(Method = "GET",
ResponseFormat = WebMessageFormat.Json,
BodyStyle = WebMessageBodyStyle.Wrapped,
UriTemplate = "json/{id}")]
string JSONData(string id);
I'll go to http://myownaddress/blabla.svc/json/123
And as result I get:
{"JSONDataResult":"You requested product 123"}
Now I have tried to receive this result with the JQuery statement getJSON. But I don't see any results.
My question is how can I get this simple data?
And secondly how can I post data(with javascript) back on to the wcf service is it also possible with json?
-edit-:
I have now updated my code and put this into my document ready function which is located between the <head> <script> .... on my page:
$.getJSON(
'http://myownaddress/blabla.svc',
function(data)
{
alert(data.JSONDataResult);
});
But this won't give the alert with the result. It doesn't even give an alert.. Besides that, in the function I need to give a parameter of id, so for example 123 (look in text above) don't I need to put that in the function also?

To get data use getJSON():
$.getJSON(
'http://myownaddress/blabla.svc/',
function(data) {
alert(data.JSONDataResult);
}
);
To post data you can use this:
$.post('http://myownaddress/postservice.svc', function(data) {
$('.result').html(data);
});
or this (if you need more control):
$.ajax({
type: 'POST',
url: url,
data: data,
success: success,
dataType: dataType
});
You can also use the ajax for getting the data instead of the getJSON method .
UPDATE:
try using ajax method as it gives you more control:
$.ajax({
type: 'GET',
url: "http://myownaddress/blabla.svc/json/123",
success: function(data){alert(data)},
dataType: "json",
complete: function(data){alert(data)},
error: function(jqXHR, textStatus, errorThrown){alert(errorThrown)}
});
Also, if you use firefox, check out firebug extension, it will help you greatly.
If you use chrome then use chrome developer tools.

In order for your to get the json data from a WCF service that is outside your website using Jquery you need to use JSONP.
You can perform the call as shown below:
$.ajax({
url: "http://myownaddress/blabla.svc/",
dataType: "jsonp",
type: "GET",
timeout: 10000,
data: null,
jsonpCallback: "MyCallback",
success: function (data, textStatus, jqXHR) {
alert(action.toLowerCase());
},
error: function (jqXHR, textStatus, errorThrown) {alert('error is:' + errorThrown);
},
complete: function (jqXHR, textStatus) {alert('complete');
}
});
JSONP is used when you want to perform a cross domain calls using Javascript.
Also your WCF service should be compatible to handle JSONP calls by injecting the results to the response stream using the callBack method specified in the URL.

Do you have your code like this ?
$.getJSON(
'http://myownaddress/blabla.svc/',
function(result) {
alert(result.JSONDataResult);
}
);
Remember getJSON will not immediately return you the data, you have to make use of the result in a callback function.

Why did you change your url?
$.getJSON(
'h t t p://myownaddress/blabla.svc' ==> 'h t t p://myownaddress/blabla.svc/123',
function(data)
{
alert(data.JSONDataResult);
});