ajax data doesn't change - javascript

I editted my ajax data but it still shows the old version while I am sure I saved it I even reopened the file and checked the location. It's like it is cached.
This is the actual code:
function setMessages(roomId, username, message){
$.ajax({
type: "get",
url: "http://www.sinansamet.nl/chatdistract/ajax/setMessages.php",
data: { roomId:roomId, username:username, message:message },
success: function(html) {
strReturn = html;
}
});
}
But what it sees is
function setMessages(id){
$.ajax({
type: "get",
url: "http://www.sinansamet.nl/chatdistract/ajax/setMessages.php",
data: { id:id },
success: function(html) {
strReturn = html;
}
});
}
Which was the old code.
The error is given in the console as "undefined id"

Do a browser refresh cache on most browsers it can be done by pressing CTRL + F5
Search google for clearing your browser cache.

the a in ajax stands for asynchronous.
the function is returning before the callback of the ajax call is being called.

Related

Ajax: conflict in client between two functions

For a university homework, I have to create a little e-commerce website.
After the login, the user is redirected to the homepage. In this homepage, the client will recive a JSON object from the server (containing some product to be loaded) to generate the DOM of the homepage dynamically.
Note: I must use AJAX and JSON
I have this client.js file:
$(document).ready(function() {
// AJAX request on submit
$("#login_form").submit(function (e) {
e.preventDefault();
$.ajax({
type: "POST",
url: "submit.php",
data: {
Email: document.getElementById('login_email').value, // Email in the form
Password: document.getElementById('login_password').value // // Password in the form
},
cache: false,
success: function(){
window.location.href = "home.php"; // load the home.php page in the default folder
}
});
});
});
$(document).ready(function() {
// AJAX request to open a channel between php and client
function (e) {
e.preventDefault();
$.ajax({
type: "GET",
url: "queries.php",
dataType: "json",
success: function(data){
var data = JSON.parse(data);
alert(data); // debug
showProducts(data);
});
});
});
});
function showProducts(data){
alert(data);
// Insert object into the page DOM
}
I don't know why, but I can't access after the login if the second Ajax request (the AJAX request to open a channel between php and client) is not commented, and I don't know why, because the code seems right... Any suggestion?
after login action you need to set to cookie token in response
success: function(response){
console.log(response)
// then set to cookie response.token
window.location.href = "home.php";
}
after set token to cookie, you need to send this token to next ajax request url: "queries.php",
You need to wrap your anonymous function in parenthesis and add () at the end if you want to execute it:
(function (e) {
// I don't know why you need this:
e.preventDefault();
// etc.
})();
You should also check the contents of that function as you seem to have too many closing parentheses and you don't need to parse the returned value if you set the dataType to json.
In the end I think this is about all you need for that function:
(function () {
$.ajax({
type: "GET",
url: "queries.php",
dataType: "json",
success: function(data){
console.log(data); // debug
showProducts(data);
}
});
})();
or just:
$.ajax({
type: "GET",
url: "queries.php",
dataType: "json",
success: function(data){
console.log(data); // debug
showProducts(data);
}
});
To get it directly on page load.

AJAX trigger remote script then check for success-response

I've been searching my brains out but I can't seem to wrap my head around the little help I find.
I'm running a database that is being fed by data from another DB. The csv transport is handled by a third party server providing executable "flows" which compile and deliver the data.
I have a php script to handle the request (can't be done directly via Javascript because of the missing 'Access-Control-Allow-Origin' header). But this runs nicely. I can trigger the flow.
This is not the problem though.
What I want to do: trigger the flow #onClick of a button with something like this:
function trigger_func(flowID) {
$.ajax({
url: './ajaxPHP_handler.php',
data: "flowid="+flowID,
dataType: 'json',
success: function(result) {
var jsonResult = jQuery.parseJSON(result);
console.log(jsonResult.runID);
}
});
}
With the flowID and the resulting runID I want to check back like every second or so.
function check_status(flowID, runID) {
$.ajax({
url: './ajaxPHP_handler.php',
data: "flowid="+flowID+"&action=status&runId="+runID,
dataType: 'json',
success: function(result){...}
});
}
This will return the status / progress of the flow.
It will start for a few seconds with status==null, then go on to status=='running' and finally status=='success'.
I have gotten check_status() to run for i.e. 15 times with a setTimeout in a for loop within the success-function of trigger_func() and it works fine too.
But I cannot for the life of me figure out how I would link this stuff together to have it checking until status is 'success' and then stop checking, update page content and so on...
I have also fiddled with something like
trigger_func(id).done(function(result){
console.log(result);
});
This works too but still I can't think my way further to the checking every second until 'success'. I guess it comes down to getting the variable 'status' back into my loop so I can break it.
Maybe someone knows of a comprehensible example somewhere online...
You could do this:
function periodically_check_status_until_success(flowID, runID) {
setTimeout(function() {
$.ajax({
url: './ajaxPHP_handler.php',
data: { flowid: flowID, action: status, runId: runID },
dataType: 'json',
success: function(result){
if (result != 'success') {
periodically_check_status_until_success(flowID, runID);
}
}
});
}, 5000); // Five seconds
}
Note: You can use an object for the data option, rather than concatenate the string yourself.
So just keep calling it
var flowID, runID;
function trigger_func(flowID) {
$.ajax({
url: './ajaxPHP_handler.php',
data: "flowid="+flowID,
dataType: 'json',
success: function(result) {
var jsonResult = jQuery.parseJSON(result);
runID= jsonResult.runID;
check_status();
}
});
}
function check_status() {
$.ajax({
url: './ajaxPHP_handler.php',
data: "flowid="+flowID+"&action=status&runId="+runID,
dataType: 'json',
success: function(result){
if (result is not what you want) {
setTimeout(check_status,1000);
}
}
});
}
ajax are async so you have to manage by this via some 3rd party variable
Like Init with value 0
var _status = 0
than change it on your first call set it 1
function trigger_func(flowID) {
$.ajax({
url: './ajaxPHP_handler.php',
data: "flowid="+flowID,
dataType: 'json',
success: function(result) {
var jsonResult = jQuery.parseJSON(result);
console.log(jsonResult.runID);
check_status(flowID, runID);
}
});
}
function check_status(flowID, runID) {
$.ajax({
url: './ajaxPHP_handler.php',
data: "flowid="+flowID+"&action=status&runId="+runID,
dataType: 'json',
success: function(result){
//at end status=='success'.
if(status=='success'){
// end part
}else{// running
check_status(flowID, runID);
}
// clear timeout will stop that time interval after success
}
});
}

Ajax redirect on error

I'm calling php file through ajax call and if it returns nothing i want to redirect user to another page (It's for error reports, if it doesn't return anything it means that user logged in). Tried to add error section but it doesn't work. Any suggestions will help. Thanks! Btw, I have small jQuery function at the top of the ajax function, why it breaks my whole ajax call?
ajax.js
function loginAjax() {
//$("#email_errors").empty(); //This function doesnt work and kills whole ajax call. Here is loginAjax function call line - <button type = "submit" id = "push_button" onclick = "loginAjax(); return false">PushMe</button>
$.ajax({
url: "Classes/call_methods_login.php",
type: "POST",
dataType: "json",
data: {
login_email: $("#login_email").val(),
login_password: $("#login_password").val(),
},
success: function(data) {
$("#login_error").html(data.login_message);
}
});
}
$.ajax({
url: "Classes/call_methods_login.php",
type: "POST",
dataType: "json",
data: {
login_email: $("#login_email").val(),
login_password: $("#login_password").val(),
},
success: function(data) {
$("#login_error").html(data.login_message);
},
error: function(){
window.location.replace("http://stackoverflow.com");
}
});
}
To redirect using javascript all you need to do is override the location.href attribute.
function loginAjax() {
$.ajax({
url: "Classes/call_methods_login.php",
type: "POST",
dataType: "json",
data: {
login_email: $("#login_email").val(),
login_password: $("#login_password").val(),
},
// the success method is deprecated in favor of done.
done: function(data) {
$("#login_error").html(data.login_message);
},
fail: function(data) {
location.href="path/to/error/page";
}
});
}

Ajax function working in IE but not Firefox

I have an ajax function is called when a form is completed. It is suppose to redirect to a certain page if there is a success for a failure. When I run the form in IE, it works perfectly but in Firefox, the page does not redirect at all. It just refreshes the page. Here is the ajax code:
$.ajax({
url: "someURL",
type: "POST",
dataType: "xml",
data: params,
success: function () { window.location = 'success_page.htm' },
failure: function () { window.location = 'error_page.htm' }
});
Well, there's a minor mistake in your code: you are missing some semicolons:
$.ajax({
url: "someURL",
type: "POST",
dataType: "xml",
data: params,
success: function () { window.location = 'success_page.htm'; },
failure: function () { window.location = 'error_page.htm'; }
});
If this still doesn't resolve your problem, then I would guess there is something wrong with your params variable. Could you show us the whole code?
try
window.location = '/error_page.htm'
Sometimes working with IE I had the same problem, I use window.location.href instead of window.location

IE 9, 10, 11 - Ajax calls not returning

I am having an issue with IE related to jQuery and ajax. Chrome and Firefox work just fine, but my ajax calls are disappearing in IE.
After making the ajax call, neither the success nor the fail functions are being called. I can see the response in the IE console, and I know my controller action is being hit.
$.ajax({
url: controllerUrl
type: 'POST',
dataType: 'json',
cache: false,
data: {
id: customerId
},
success: function () {
alert('success!');
},
error: function () {
alert('failed!');
}
});
Has anyone else seen this issue?
fail: function () {
alert('failed!');
}
fail is not a valid jQuery ajax setting. I believe you are looking for error.
Also, cache: false, does nothing with POST requests.
Note, jQuery does not append the time stamp with POST requests.
The source code clearly demonstrates this. (summarized from https://github.com/jquery/jquery/blob/master/src/ajax.js)
var rnoContent = /^(?:GET|HEAD)$/;
s.hasContent = !rnoContent.test( s.type );
if ( !s.hasContent ) {
/* code to append time stamp */
}
You are missing a comma , after your URL parameter:
$.ajax({
url: controllerUrl, // <--- you were missing this comma!
type: 'POST',
dataType: 'json',
cache: false,
data: {
id: customerId
},
success: function () {
alert('success!');
},
error: function () {
alert('failed!');
}
});

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