I am using ajax, sometimes it takes time to load all the data from my database therefore I need to find a way to display (Loading...) While the data is not yet complete. Below is my sample code, and I am looking for some event while the data is still in process.
$.ajax({
type: "POST",
url: "some.php",
data: "name=John&location=Boston",
success: function(data){
$('#para').html(data);
}
});
It is very simple..
before you call the ajax start your loading image..& after the success hide the image
for eg :
$.fancybox.showLoading();
$.ajax({
type: "POST",
url: "some.php",
data: "name=John&location=Boston",
success: function(data){
$.fancybox.hideLoading();
$('#para').html(data);
}
});
here
$.fancybox.showLoading()
is my function in which I have the property of displaying the loader,
This will be internally called whenever an ajax call is made.
$.ajaxStart(function() {
$("img#loading").show();
});
$.ajaxComplete(function() {
$("img#loading").hide();
});
HTML
<img src="../images/loading.gif" alt="wait" id="loading"/>
<div id="loading">LOADING...</div>
var loading = $("#loading");
loading.hide();
function doAjax() {
loading.show();
$.ajax({
url: "/js/beautifier.js",
success: function (data) {
loading.hide();
}
});
}
doAjax();
on jsfiddle
Related
I am now in javascript, I am trying to display a indictor icon when ajax starts and hide it when it finishes, below is my code:
CSS:
div.ajax-progress {
//some setting and url
}
<body>
<div class="ajax-progress"></div>
</body>
Javascript:
$('#fileToUpload').on('change', function(e) {
var file = e.target.files[0];
var formData = new FormData($('form')[0]);
imageId = cornerstoneWADOImageLoader.fileManager.add(file);
$.ajax({
url: 'loadfile.php',
type: 'POST',
data: formData,
async: false,
dataType: 'json',
timeout : 60000,
beforeSend :function(){
$(".ajax-progress").show();
}，
success: function (html) {}
$(".ajax-progress").hide();
//doing something}
});
});
but nothing happens, any idea? appreciated.
Maybe if you put $(".ajax-progress").show(); before the call of ajax $.ajax({}); and them hide it in the succes.
I don't know if that's the same to what you have in your code but you commented out the success closing bracket }
you can also use console.log() or alert() to see what's going on in your code.
Try rewriting your ajax as below:
$.ajax({
url: 'loadfile.php',
type: 'POST',
data: formData,
async: false,
dataType: 'json',
timeout : 60000,
beforeSend :function(){
//do something
}，
success: function (html) {
//doing something
}
});
$(document).ajaxStart(function() {
$(".ajax-progress").show();
});
$(document).ajaxStop(function() {
$(".ajax-progress").hide();
});
This will show and hide $(".ajax-progress") in all your ajax requests within the application.
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) {
$.ajax({
url: './ajaxPHP_handler.php',
data: "flowid="+flowID+"&action=status&runId="+runID,
dataType: 'json',
success: function(result){
//at end status=='success'.
if(status=='success'){
// end part
}else{// running
check_status(flowID, runID);
}
// clear timeout will stop that time interval after success
}
});
}
I'm calling php file through ajax call and if it returns nothing i want to redirect user to another page (It's for error reports, if it doesn't return anything it means that user logged in). Tried to add error section but it doesn't work. Any suggestions will help. Thanks! Btw, I have small jQuery function at the top of the ajax function, why it breaks my whole ajax call?
ajax.js
function loginAjax() {
//$("#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";
}
});
}
I'm loading a part of a page using ajax with this script:
<script type="text/javascript">
$(document).ready(function(){
$('#btn_new').live('click',function(){
var parameter = 1;
$.ajax({
type: "POST",
url: "new_message.php",
data: {
parameter:parameter,
},
success: function(msg)
{
$("#lib_container").ajaxComplete(function(event, request, settings)
{
$("#lib_container").html(msg);
});
}
});
});
});
</script>
Inside the lib_container div I have a text input with this script:
<script type="text/javascript">
function searchUsers(str) {
$.ajax({
type: "POST",
url: "users_ajax.php",
data: {
search:str
},
success: function(msg)
{
//console.log(msg);
//$("#users_lst").html(msg.response);
$("#users_lst").ajaxComplete(function(event, request, settings)
{
$("#users_lst").html(msg);
});
}
});
}
</script>
When I load some text in the input, the second ajax script loads the msg variable in the div but then also reloaded the lib_container div.
I've tried many ways to prevent the lib_container ajax trigger but it was in vain. Just putting the input in new page works correctly.
Can anyone help me solve this?
Thanks.
Your problem seems to be that you are registering a new ajaxComplete handler every time you get a successful response from the ajax call. Since it seems like you want to update the html, I'm not sure why you need those ajaxComplete handlers anyway.
Try it like this:
$(document).ready(function(){
$('#btn_new').live('click',function(){
var parameter = 1;
$.ajax({
type: "POST",
url: "new_message.php",
data: { parameter:parameter },
success: function(msg) {
$("#lib_container").html(msg);
}
});
});
});
And by the same token:
function searchUsers(str) {
$.ajax({
type: "POST",
url: "users_ajax.php",
data: { search:str },
success: function(msg) {
$("#users_lst").html(msg);
}
});
}
On another note, .live is deprecated and you really ought to be using ajax promises rather than a success callback. See the jQuery api for more info on that.
I have an AJAX call on MVC3 it looks like this
save: function () {
$.ajax({
url: "#Url.Action("Save")",
type:"post",
data: ko.toJSON(this),
contentType:"application/json",
success: function(result){alert(result.message)}
});
}
The trouble is the line
success: function(result){alert(result.message)}
I want to pass all the messing things in a HtmlHelper, however, the success line prevents me from doing so, is there a way I can specify a function for that line
success: doSomeStuff(result)
and
function doSomeStuff(result){alert(result.message)}
Thanks in advance
Simply pass the function name to the success: method and it will pass the data onwards, as such:
save: function () {
$.ajax({
url: "#Url.Action("Save")",
type:"post",
data: ko.toJSON(this),
contentType:"application/json",
success: doSomeStuff
});
}