I have the following ajax request that runs when the page is loaded
var city_id = $(".feed-selected-city").attr('id');
$("#cityfeed").html("<div class='feed-loading'>The feed is loading ...</div>");
var ajaxOpts = {
type: "get",
url: "ajax_getcityfeed.php",
dataType: 'json',
data: "&city=" + city_id,
success: function(data) {
$('#cityfeed').html(data.data);
}
};
$.ajax(ajaxOpts);
How can I run this piece of code every 10 seconds after that?
Wrap it in a function, and use setTimeout to continuously call the function.
function tick() {
var city_id = $(".feed-selected-city").attr('id');
$("#cityfeed").html("<div class='feed-loading'>The feed is loading ...</div>");
var ajaxOpts = {
type: "get",
url: "ajax_getcityfeed.php",
dataType: 'json',
data: "&city=" + city_id,
success: function(data) {
$('#cityfeed').html(data.data);
}
};
$.ajax(ajaxOpts);
setTimeout('tick()',10000);
}
$(document).ready(function() {
tick();
}
#Yegor
Wrap the above function using a name. Then use setTimeout(function(){//call the function here},10000); -
I would suggest you not to make this kind of implementation. Make some alternative.
Use a infinite loop with setTimeout. And put that inside.
Though I don't recommend this to achieve what you're trying todo. I think what you require is some kind of polling; this will probably kill your server if there's a high amount of simultaneous users; since each visitor will send a http request every 10 seconds.
function timedCount()
{
console.log('Hello');
setTimeout("timedCount()",10000);
}
timedCount();
Related
I m running the following script with success : it updates the text every 3s
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<script>
$(function() {
window.setInterval(function() {
loadNewText()
}, 3000)
function loadNewText() {
$.ajax({
url: "/update_report",
type: "POST",
dataType: "json",
success: function(data) {
$(report).replaceWith(data)
}
});
}
});
</script>
I want to change the function in HTML to run 'loadNewText()' only if there's changes in certain variable in Python code !
I've put the variables in python route :
#app.route('/console-output')
def console_output():
fileHandle = open("console_output.txt", "r")
lineList = fileHandle.readlines()
fileHandle.close()
last= lineList[len(lineList)-1]
with open('console_output.txt', 'r') as r:
co =r.read()
return render_template("console-output.html",console_output_msg=console_output_msg, last=last, co=co)
and write the following code in HTML :
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<script>
$(function() {
if (last != console_output_msg) {
loadNewText();
}
function loadNewText() {
$.ajax({
url: "/update_text",
type: "POST",
dataType: "json",
success: function(data) {
$(new_text).replaceWith(data)
}
});
}
});
</script>
This method is not working ! I don't have a big experience with Javascript! I don't know if I m not calling the variables (last, console_output_msg) the right way or my function is not valide !
If there's any way to correct it or any other suggestion to call 'loadNewText()' when changes happens in python code !
Thanks!
There are 2 popular ways to update the text when there is a change in Python:
Long polling
Using setInterval() function to trigger an ajax call to the server to check if there are any changes.
WebSocket
Implement a WebSocket connection between the server and browser. Receive the message sent from the server.
Link for implement WebSocket in Python.
https://websockets.readthedocs.io/en/8.1/intro.html
You can't access server variables on the client.
You could save the previous output in a JavaScript variable, and only update the DOM if it has changed. You need to put the if statement inside the loadNewText() function, after it has received the response, so it can compare it.
This won't skip the AJAX call, but it will avoid refreshing the page when nothing has changed.
$(function() {
let last_output;
window.setInterval(loadNewText, 3000)
function loadNewText() {
$.ajax({
url: "/update_report",
type: "POST",
dataType: "json",
success: function(data) {
if (data != last_output) {
$(report).replaceWith(data);
last_output = data;
}
}
});
}
});
I have an ajax request:
$.ajax({
type: 'POST',
url: '/get-result.php',
dataType: 'json',
data: 'pid=' + $(this).attr("id"),
success: function(response) {
$(".reviewee-fname").append(response['fname']);
$(".reviewee-lname").append(response['lname']);
} }); };
I want to be able to put this inside a function that waits for me to trigger it with a return call. I am not exactly sure how to word it, I am new to javascript and jquery. But basically, I want to trigger this ajax call with various different button clicks and instead of having to put the ajax call inside every button click event, I want to put it in a stand alone function so if I ever update it later I dont have to change it 5 times.
Heres an example of a click event Id like to call the ajax request function with. Thanks!
$(function() {
$(".task-listing").click(function() {
//Call Ajax function here.
});
});
Callbacks are well-suited for this scenario. You can encapsulate your ajax call in a callback function.
function apiCall() {
$.ajax({
type: 'POST',
url: '/get-result.php',
dataType: 'json',
data: 'pid=' + $(this).attr("id"),
success: function(response) {
$(".reviewee-fname").append(response['fname']);
$(".reviewee-lname").append(response['lname']);
} }); };
}
You can now hook apiCall()method as a callback to button click.
$(function() {
$(".task-listing").click(apiCall);
});
By doing this you will able to achieve this.
I want to put it in a stand alone function so if I ever update it later I dont have to change it 5 times.
EDIT:
Note:
This is lead to start, you can alter this according to your requirement.
Is this not working for you? ↓↓
$(function() {
$(".task-listing").click(function() {
let pid = $(this).attr("id"); //get any other value which you want to pass in function, say url
someFunction(pid); // pass any other parameters, eg- someFunction(pid, url)
});
});
function someFunction(pid){ // someFunction(pid, url)
$.ajax({
type: 'POST',
url: '/get-result.php', // url: url
dataType: 'json',
data: 'pid=' + pid,
success: function(response) {
$(".reviewee-fname").append(response['fname']);
$(".reviewee-lname").append(response['lname']);
}
});
}
I need to call flask function in python with ajax continously. To that I have following script in html file.
<script >
var ajaxFUN = function () {
$.ajax({
url: '/toAjax',
dataType: 'json',
success: function (data) {
console.log('get info');
$('#data').html(data['data']);
}
});
}
setTimeout(ajaxFUN, 1);
</script>
And here is the python code
#app.route('/toAjax')
def ajaxTo():
print("AJAX WAS HERE")
data= reader.getToAjax()
info = {
"data": data
}
return jsonify(info)
I need to call /toAjax header route in the python continously without hitting any button or any kind of method.
But that implementation prints only once AJAX WAS HERE. Where is the missing part ? How can I fix it ?
Here is the similiar questions which I have looked:
setTimeout() and setting parameters
how to make ajax calls continuously for 5 seconds once
setTimeout triggers exactly once (unless cancelled)
you could use setInterval, but that's likely to flood your server at the rate you've used for setTimeout
I would recommend the following
var ajaxFUN = function () {
$.ajax({
url: '/toAjax',
dataType: 'json',
success: function (data) {
console.log('get info');
$('#data').html(data['data']);
ajaxFUN(); // this calls the function again
}
});
}
ajaxFUN();
In case you're worried, there's no "recursion", since ajaxFUN() is being called in an asynchronous callback
I want to call Ajax which fetches all the comments from database.
Now how to put a check on that Ajax Script to Run, when only someone comments.
Same as the stackoverflow notifications. When we comment on question, The Notification appears without reloading page (i.e On Runtime ).
Right now I am Running the same Ajax Script after each 10 seconds again and again, when I think is a bad way .So Here is my working Ajax Code:
$(document).ready(function(){
setInterval(function(){
$.ajax({
type: "GET",
url: "ajax_files/reload_notifications.php"
}).done(function(result) {
var $notifications = $('#notification_area');
if ($notifications.length > 0) {
$notifications.html(result);
}
});
}, 10000);
});
When a comment is entered, do a similar AJAX request that will save the comment and on it's success callback, call another function which will also hit another AJAX request which fetches the comments. For e.g.
function insertComment() {
$.ajax({
type: "GET",
url: "ajax_files/insert_comment.php"
}).done(function(result) {
fetchComments();
}
});
}
function fetchComments() {
$.ajax({
type: "GET",
url: "ajax_files/reload_notifications.php"
}).done(function(result) {
var $notifications = $('#notification_area');
if ($notifications.length > 0) {
$notifications.html(result);
}
});
}
Hope this helps!
The first time a user is visiting my website, I am pulling a lot of information from various sources using a couple of ajax calls. How do I reload the page once the ajax calls are done?
if(userVisit != 1) {
// First time visitor
populateData();
}
function populateData() {
$.ajax({
url: "server.php",
data: "action=prepare&myid=" + id,
dataType: "json",
success: function(json) {
if(json.error) {
return;
}
_id = response[json].id;
getInformation(_id);
}
});
}
function getInformation(id) {
$.ajax({
url: "REMOTESERVICE",
data: "action=get&id=" + id,
dataType: "json",
success: function(json) {
if(json.error) {
return;
}
$.ajax({
url: "server.php",
data: "action=update&myid=" + id + '&data=' + json.data.toString(),
dataType: "json",
success: function(json) {
if(json.error) {
return;
}
}
});
}
});
}
So what the code does is, it gets a list of predefined identifiers for a new user (populateData function) and uses them to get more information from a thirdparty service (getInformation function). This getInformation function queries a third party server and once the server returns some data, it sends that data to my server through another ajax call. Now what I need is a way to figure out when all the ajax calls have been completed so that I can reload the page. Any suggestions?
In your getInformation() call you can call location.reload() in your success callback, like this:
success: function(json) {
if(!json.error) location.reload(true);
}
To wait until any further ajax calls complete, you can use the ajaxStop event, like this:
success: function(json) {
if(json.error) return;
//fire off other ajax calls
$(document).ajaxStop(function() { location.reload(true); });
}
.ajaxStop() works fine to me, page is reloaded after all ajax calls.
You can use as the following example :
$( document ).ajaxStop(function() {
window.location = window.location;
});
How it's works?
A: Whenever an Ajax request completes, jQuery checks whether there are any other outstanding Ajax requests. If none remain, jQuery triggers the ajaxStop event.
Hope help y'all, furthermore information, I'm sharing the link of the documentation following.
source: https://api.jquery.com/ajaxstop/
You could just redirect to the same page in the server.php file where the function is defined using a header('Location: html-page');
//document.location.reload(true);
window.location = window.location;
See more at: http://www.dotnetfunda.com/forums/show/17887/issue-in-ie-11-when-i-try-to-refresh-my-parent-page-from-the-popupwind#sthash.gZEB8QV0.dpuf