So I have searched the forum for similar questions unfortunately I have been unlucky to find an answer that suits my problem.
I am trying to make an ajax call in my jquery using the following code;
function submitForm(formData)
{
$.ajax({
type: 'POST',
url: 'addEvents.php',
data: formData,
dataType:'json',
cache:false,
timeout:7000,
success: function(data){
$('#addEventsForm #response').removeClass().addClass((data.error === true) ? 'error' : 'success').html(data.msg).fadeIn('fast');
if($('#addEventsForm #response').hasClass('success')){
setTimeout("$('#addEventsForm')",5000);
}
},
error:function(XHR,textStatus,errorThrown)
{
$('#addEventsForm #response').removeClass().addClass('error').html('<p> There was an <strong>' + errorThrown +
'</strong> error due to <strong>'+ textStatus +'</strong> condition.</p>').fadeIn('fast');
console.log(arguments);
//alert(XMLHttpRequest.responseText);
},
complete:function(XHR,status)
{
$('#addEventsForm')[0].reset();
}
});
}
But I am getting a sysntax error. I have tried doing this to see what errors I get in chrome
console.log(arguments);
but the responseText in the [Object, "parsererror" , SyntaxError] node seems to display the entire html of the page that contains the form where I am inserting the record.
I am still getting my feet wet in ajax so I am not yet a pro in absolutely understanding the error messages and what they mean.
Is the above js/jQuery code located on the addEvents.php page -- that is, on same page that you are posting the AJAX to? (In other words, are both the form/ajax and the AJAX destination on the same physical PHP page?)
If so, you will get exactly what you describe: the entire HTML of the page spat back at you.
AJAX, by design, must post to a different physical page on the server. That's just how it works.
Also, FWIW, note that dataType: 'json', refers to the data being returned, not the data being sent. Perhaps you already know this, but it is a common misunderstanding so is worth mentioning.
Edit:
As Felix points out, this answer is not technically perfect. It is possible to post AJAX code to the same page, but you must specifically allow for that. Perhaps FK or another could edit this post to add an example of what that additional code would look like?
Related
I have several different ajax calls on the same php page, but I get undefined index for only one function (createAlbum).
I send exactly the same parameters in each of my ajax calls. It worked fine for a few tests, but now it only works for the other ones, but not for this specific call.
I suspected that the .js file was still in the browser cache, so I cleared it and tried with other browsers, which worked for a few more attempts.
Now, I can't get it working on any browser, and definitely don't understand why.
Here is my ajax call :
$.ajax({
type: "POST",
url: BASE_URL,
data: {
action: "createAlbum",
data: JSONAlbum
},
cache: false,
success: callback
});
My php file handling the request ($_POST['action'] is always undefined with the above request) :
if (isset($_POST['action'])) {
switch ($_POST['action']) {
// Handle the action
// ...
}
} else {
echo 'ACTION : '.$_POST['action'];
}
The header containing the ajax parameters ("data" is a json containing one or more blob images, this might be the problem, but I didn't find anything saying so) :
And finally, the response containing the error :
I really hope this is not a dumb error of mine, but I asked a friend before posting, and he can't find the solution either.
Thanks for your help !
You said that the error not happens all the time (in some call yes, in other no).
The body post is sent, you see it in console. So we can exclude javascript problem.
So the problem is something that happens before or during the process.
PHP has some limitations on input vars, you can see it in php.ini.
I see that you send images in base64, so it's probable that something of these limitations are triggered.
See for example:
max_input_time
max_input_vars
post_max_size
I'm very new to JSON and JSONP.
I've read through each of the posts that are recommend by the SO search for this error, but I can't seem to get a handle on it.
I have the following code to grab data from an EXTERNAL website:
$.ajax({
url: "https://url.com/authenticate?login=test&apiKey=test",
dataType: 'jsonp',
success:function(json){
console.log("login successful");
}
});
When I load the page, I get:
Uncaught SyntaxError: Unexpected token :
and when I click on the error in Chrome, I see
{"Status":{"Code":"2","Message":"Authentication Succeeded","Success":"true"}}
with a little red x after "true"})
From this, it seems as though I have succeeded in logging in, but I'm doing something else wrong because my console.log("login successful"); never fires. What am I doing wrong?
P.S.
I've tried dataType: 'json' but I get the No 'Access-Control-Allow-Origin' header is present as I'm on a different server, so I went back to jsonP as this is cross-domain.
I've also tried the above url as url: "https://url.com/authenticate?login=test&apiKey=test&callback=?", as I've read I need a callback, but I don't really understand what the functionality of callback is and either way, the error that gets returned (whether &callback=? is in there or not) is:
authenticateUser?login=test&apiKey=test&callback=jQuery111107732549801003188_1423867185396…:1 Uncaught SyntaxError: Unexpected token :
so it's adding the callback in either way....
Also, from the API I'm trying to access:
"this uses the REST protocol, and provides data structured as XML or JSON"
This is not a duplicate of the linked post as the information in the linked post does a great job of explaining what JSONP is, but doesn't answer my specific question regarding why I get data back (so my call is successful,) but why I still get an error and cause my script to stop.
The API you're sending the AJAX request doesn't implement JSONP. It ignores the callback= parameter, and just returns ordinary JSON. But when the browser tries to process this as JSONP, it gets a syntax error because it's not properly formatted. JSONP is a JSON object wrapped in a call to the specified callback function, e.g. it should be sending back:
jQuery111107732549801003188_1423867185396({...});
where {...} is the JSON object you're trying to retrieve. But it's just returning {...}.
You should implement this using a PHP script on your own server. It can be as simple as this:
<?php
$username = urlencode($_POST['user']);
readfile("https://url.com/authenticate?login=$username&apiKey=test");
Then your AJAX call would be:
$.ajax({
url: "yourscript.php",
type: "post",
dataType: "json",
data: { user: "test" },
success: function(json) {
console.log("login successful");
}
});
So I have to send some data to a php page, and it will return me another php page based on my data.
I send the data this way:
$(document).ready(function() {
$.ajax({
url: '//www.example.com/page.php',
type: "post",
dataType: 'jsonp',
data: { myvar:myvalue },
success: function(response) { console.log("success."); },
error: function(XMLHttpRequest, textStatus, errorThrown) { console.log("error."); },
complete: function() { console.log("complete."); }
});
});
It shows an alert saying jQuery180014405992737595236_1357861668479 was not called (numbers are copied from other question)
I think the reason is that it's expecting a json result from the page, when it's not.
In Chrome it says Uncaught SyntaxError: Unexpected token < referring to the returned php page, so I assume that my code isnt expecting that kind of file to be returned.
To sum up, this works, but that jQuery alert and the console error needs to be fixed, and I think the right way would be handling properly the returned result page.
I hope you guys can help me fix it that seems quite a simple task, but Im really new to this. Thanks
Removing the dataType: 'jsonp' or changing it to 'json' turns out on my script not being executed and getting the following error:
XMLHttpRequest cannot load http://www.example.com/page.php. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://myserver.com/myPage' is therefore not allowed access.
I think the reason is that it's expecting a json result from the page
It's expecting a JSONP response. (JSONP is not JSON). You said:
dataType: 'jsonp',
… which explicitly forces jQuery to treat the response as JSONP (and, as a side effect, GET).
the returned php page, so I assume that my code isnt expecting that kind of file to be returned.
The server shouldn't be returning a PHP page. It should be executing the PHP code and returning whatever that outputs. It looks like it is outputting HTML.
You need to either:
Not tell your script to expect JSONP. (Note that you'll probably then have to configure CORS on the server to deal with same origin issues) or
Change the PHP to return JSONP
Frustratingly the GoogleAppLauncher can't replicate this and the error only occurs on production. Essentially I have a form submitting json to mailchimp. It is erroring at the javascript and I can't work out why. You can see the 500 error if you try to submit the form - https://v-sons.appspot.com/our-underwear/#subscribe
On the server looks to be a Call to undefined function add_theme_support() however the console tells a different story (I don't understand whether the two relate / not).
In my console, the jQuery error references:
xhr.send( ( s.hasContent && s.data ) || null );
However digging deeper it looks to be a problem with the $.ajax anonymous function of this code block that's being submitted:
jQuery.ajax({
url: action,
type: 'POST',
data: $stickyForm.serialize(),
success: function(data)
{
window.location.hash = 'nearly';
$('#modalOverlay').addClass('nearly').fadeIn();
$('#stickyEmail').val("");
$('#nickName').focus();
}
});
I've tried to cover as much as I can with this, because to be honest I'm not sure where the problem really lies. It'd be really great to get an answer / some help though because I've been bashing keys for hours trying to work this out. The main problem is this isn't a problem on my local server, and I don't know from what end to attack the problem.
//
Update: It has just occurred to me that this error might have been created by issuing the other fix I used on this other related question I asked the community - 500 Error when Migrating Wordpress to Google Cloud
See AJAX Mailchimp signup form integration which suggests adding dataType: 'json' and setting contentType.
I am playing with Google API in javascript. I managed to get a list of my contact with the following code :
$.ajax({
url: 'https://www.google.com/m8/feeds/contacts/default/full?access_token=' + access_token + '&alt=json',
method: 'GET',
error: function(error) {
alert('An error has occured during contact creation.');
},
success: function(data, status){
console.log(data);
}
});
I tried to add a contact by changing GET to POST and adding my contact data in the request body. But as soon as I add a data attribute, or change GET to POST, the server answers me the really annoying "No 'Access-Control-Allow-Origin" error.
Any idea?
I am following this documentation : https://developers.google.com/google-apps/contacts/v3/?csw=1#creating_contacts
Thanks a lot
It is possible to do this from the browser, although not obvious at all.
Based on this SO answer, we learn that there is method called gapi.client.request that can be used for this (instead of jQuery's $.ajax).
Accordingly, for editing we can do:
gapi.client.request({
method : 'PUT',
path:'m8/feeds/contacts/default/full/<contactId>/<editRevisionFromGET>',
body : {"version":"1.0","encoding":"UTF-8","entry": ...},
callback : function(data) {
console.log(data);
}
});
The important parts for editing in here are:
send back the entire entry you got before from a read
use the current ID given at the end of the URL in the entry.link element with relation type edit (or you'll get a HTTP Status 409 - Conflict)
Side note:
Notice that these requests actually are done to https://content.googleapis.com/ ...
From some quick tests, it seems you can do ?all? requests just to that URL instead of google.com, and then CORS issues disappear.