Develop Reference

Ajax POST works in safari, but not in other browsers

I've got an form which posts a form trough an ajax script to some PHP code. Strangely enough everything is working in Safari, but once i try it in either Firefox or Chrome the ajax call handles everything as an error, though the console doesn't show any errors.
$('#newClearance').on("submit", function(e) {
e.preventDefault();
var formData = new FormData(this);
$.ajax({
method: 'POST',
url: 'modules/avas/library/avas_functions.php?action=newClearance',
data: formData,
contentType: false,
cache: false,
processData: false,
success: function (data, status) {
$('#formModal').modal('hide');
$.notify(data, {type: 'success'});
$.get(window.location)
.done(function (r) {
var newDom = $(r);
$('#clearanceList').replaceWith($('#clearanceList', newDom));
});
},
error: function (data,status,error) {
$.notify(error, {type: 'danger'});
}
});
});
If I post the html form directly to the PHP script, everything goes well and the PHP script returns a success. It works in all browsers.
I really can't find the clue, especially as the same script, except for another form, is working perfectly fine in all browsers. Anybody a clue?
Additional info
Good thing to note might be that the form and jquery are placed in a modal, as you might notice form the code.

What do your server logs say when it receives the request?

Part of the solution appears to be the "submit" button of the form, which was required by the PHP script to run. I've removed this condition in the PHP script, but still wondering why firefox/chrome doesn't POST the submit button and safari does.

Only IE 11 losing focus on ajax call sometimes ASP.NET MVC4

I am using a boostrap dialog box to pull in a list with a quantity. After I submit my form, and open the dialog box to check to see if the quantity has updated, it seems to be stale data. I have a call with ajax to the controller and then back to the database to pull in updated info. But when I set a breakpoint in the controller (on server side) it never hits. IT ONLY kicks out of the issue when I set a breakpoint to the function calling ajax within developer tools and debugger. I don't see any console errors either.
I don't have an issue with Firefox, just IE11.. here is the code:
<script type="text/javascript">
function LocationModal() {
$("#GetLocBtn").attr("disabled", "disabled");
var partNumber = $("#PartNum").val();
var Condition = 'Z';
var urlQry;
var receiveIsChecked = document.getElementById('Receive').checked;
var src = 'removed for security';
$.ajax({
type: "GET",
url: src,
dataType: "json",
contentType: "application/json; charset=utf-8",
data: { partNumber: partNumber, CCODE: Condition },
beforeSend: function () {
},
success: function (data) {
$("#LocationModalContainer").html(data.LocationModal);
},
error: function (XMLHttpRequest, textStatus, errorThrown) {
}
});
};

The problem is indeed that IE caches the results of Ajax calls. You can prevent that behavior either by adding cache: false to every call, like you've discovered, or setting it globally via ajaxSetup before you make any calls.
$.ajaxSetup({
cache: false
});
The use of ajaxSetup is discouraged in the jQuery documentation, but might be a good solution for you if you don't use any plugins that might rely on the normal behavior and want to quickly make sure none of your own ajax calls is cached.
Personally, I have my doubts about how real the interference risk mentioned in the documentation is when it comes to the cache setting, since basically you just make IE behave like other browsers.

Why is my jquery ajax not working on my page and page is also refreshing

I am new in the area of jQuery/Ajax and my little test function doesn't work. And my page is also refreshingcan any one help me
<script type="text/javascript" >
$(document).ready(function() {
$("#ser_itm").change(function() {
var id=$(this).val();
var dataString = 'id='+ id;
alert(dataString);
$.ajax({
type: "POST",
url: "bar_pull.php",
data: dataString,
cache: false,
success: function(html) {
$("#tbl").html(html);
}
});
});
});

Pass the function, not the result of the function call:
$('.linkDetails').on('click', getDetailsFromServer);
Apply the same to your AJAX success callback:
success: postToPage
Also, the getDetailsFromServer() function needs to be defined before you bind it to an event. Move the function declaration before your .on('click', ...) call.

So I'm going to try and explain these points more clearly:
You cannot access C:\Users\yah\Desktop\text.txt. This is a server side path, your javascript runs on the client side. So this needs to be a path you can browse to in your browser, something like /pathinURL/text.txt. How you do this is dependant on your hosting technology, etc.
Your call backs are also wrong,
$('.linkDetails').on('click', getDetailsFromServer());
&
success: postToPage()
these will execute the function when they are hit, (well it actually binds the function result) not when the event happens. To make these work you need to remove the braces:
$('.linkDetails').on('click', getDetailsFromServer);
&
success: postToPage
this then hooks up the actual functions as function pointers and thus the actual functions will be fired when you want them to be.
so your final code will look like:
$('.linkDetails').on('click', getDetailsFromServer);
function getDetailsFromServer() {
$.ajax({
type: 'GET',
url: '/someURL/text.txt',
success: postToPage
});
}
function postToPage(data) {
$('.textDetails').text(data);
console.log(data);
}

what Arun P Johny said is right! but your code has another probloem
$('.linkDetails').on('click', getDetailsFromServer);
try above

The same origin policy implemented by browsers prevents local file system urls... if the page and the files are in same folders it might work.
See SOP for file URI for FF

Ajax Call Sequence in a function

I have a little question. say i have a js function
$(function() {
$(".button").click(function(){
var id=$(this).attr('id');
var dataString = 'id='+ id ;
$.ajax({
type: "POST",
url: "download_number.php",
data: dataString,
cache: false,
success: function(html)
{
$("#div_"+id).html(html);
} });
window.open('File_download.php?file_id='+id, '_blank' );
});
as you can see window.open call is after $.ajax call
Does it guaratee that $.ajax call will get executed every time before the page reloads and if no then
shouldn't we declare window.open in success function?
In my opinion when there is slow response from server the page will reload first and it may happen that $.ajax call will be interrupted by window.open function
but i get a downvote for the same reason here stackoverflow.com/questions/12908138/how-to-get-the-id-or-name-of-related-file/
And Thanks for making my belief stronger

In your example, the window.open function will always (!) be called before the success callback function given to the ajax call. Ajax traffic is always asynchronous, whereas the window.open function resides in the synchronous JS <script> tag.
Since JavaScript is single-threaded, all synchronous statements will always be executed before any asynchronous functionality like ajax setTimeout animate etc.
$.ajax({
type: "POST",
url: "download_number.php",
data: dataString,
cache: false,
success: function(html) { // asynchronous functionality
$("#div_"+id).html(html);
}
});
// within synchronous script statements
window.open('File_download.php', '_blank' );

Yes, Ajax is asynchronous so you will open that window right after you started the XHR process. To download the processed data, open the new window from the success callback. Yet I'm not sure what you mean by "before the page reloads" - there is no code which does that.
Also I don't know how your server behaves, the file_download.php seems to be independent from your ajax call. Shouldn't you pass the download_number you received via ajax in there?

jQuery Ajax HTTP Request INTO a click function - not working

My question is:
Is it possible to do an Ajax request WITHIN a click function, with jQuery? (see example below), If so, what am I doing wrong? Because I'm not being able to do any request (I'm alerting the data through my success function and nothing is being retrieved).
Thank you very much in advance for any help! :)
function tracker(){
this.saveEntry = function(elementTracked, elementTrackedType){
var mode = "save";
var dataPost = "mode="+mode+"&elementTracked="+elementTracked+"&elementTrackedType="+elementTrackedType;
$.ajax({
type: "POST",
url: 'myURL',
data:dataPost,
success:function(msg){
alert(msg);
},
beforeSend:function(msg){
$("#trackingStatistics").html("Loading...");
}
});
return;
},
this.stopLinksSaveAndContinue = function(){
var fileName;
$("a[rel^='presentation']").click(function(e){
fileName = $(this).attr("rel").substring(13);
this.saveEntry(fileName,"Presentation");
})
}
}

If your anchor is linked with the href attribute, then this may be interrupting your AJAX request. A similar problem was recently discussed in the following Stack Overflow post:
window.location change fails AJAX call
If you really want to stick to using AJAX for link tracking, you may want to do the following:
Link
With the following JavaScript logic:
function tracker(url) {
$.ajax({
type: 'POST',
url: 'tracker_service.php',
data: 'some_argument=value',
success: function(msg) {
window.location = url;
}
});
}

Have you considered the possiblity that the request might be failing. If so, you're never going to hit the alert.
Can you confirm that the beforeSend callback is being fired?
Also, I'm assuming 'myURL' isn't that in your real-world source code?
There may also be something awry in the }, that closes your function.

Im guessing some sort of error is being generated. Try adding
error:function(a,b){
alert(a);
},
After 'success'