I want to create async AJAX query to check server status when web page finish loading. Unfortunately when it comes to data display from processed PHP, I receive only single value.
JS:
<script>
window.onload = function() {
test();
};
function test()
{
var h = [];
$(".hash td").each(function(){
var hash = $(this).closest('#h').text();
if (hash) {
$.ajax({
url: 'stat.php',
method: 'POST',
async: true,
data: {hs: JSON.stringify(hash)},
success: function(data) {
$('.result').replaceWith(data);
}
});
}
});
}
</script>
PHP:
<?php
require_once ('inc/config.php');
require_once ('inc/libs/functions.php');
if (isset($_POST['hs'])) {
$hash = json_decode($_POST['hs']);
serverstatus($hash);
}
function serverstatus($hash) {
$address = DB::queryFirstRow("SELECT address,hash FROM servers WHERE hash=%s", $hash);
$address_exploded = explode(":", $address['address']);
$ip = $address_exploded[0];
$port = $address_exploded[1];
$status = isServerOnline($ip,$port);
if ($status) {
$s = "Online $ip";
} else {
$s = "Offline";
}
echo $s;
}
?>
I embed result from PHP to a table row. I see that AJAX iterating over the array, but all rows receive same value (last checked element in array).
$('.result') matches all elements with the class result. replaceWith will then replace each of them with the content you provide.
If you want to only affect the .result element within some structure (perhaps the same row?), you need to use find or similar:
function test()
{
var h = [];
$(".hash td").each(function(){
var td = $(this); // <====
var hash = td.closest('#h').text();
var result = td.closest("tr").find(".result"); // <====
if (hash) {
$.ajax({
url: 'stat.php',
method: 'POST',
async: true,
data: {hs: JSON.stringify(hash)},
success: function(data) {
result.replaceWith(data); // <====
}
});
}
});
}
Obviously the
var result = td.closest("tr").find(".result"); // <====
...will need to be tweaked to be what you really want it to be, but that's the idea.
This line in your question suggests an anti-pattern:
var hash = $(this).closest('#h').text();
id values must be unique in the document, so you should never need to find the one "closest" to any given element. If you have more than one id="h" element in the DOM, change it to use a class or data-* attribute instead.
Thank you all for help. My final, obviously very dirty but working code:
function testServerPage()
{
var h = [];
$(".hash li").each(function(){
var hash = $(this).closest('#h').text();
if (hash) {
$.ajax({
url: 'stat.php',
method: 'POST',
//async: true,
data: {hs: JSON.stringify(hash)},
success: function(data) {
$('#' + hash).replaceWith(data);
}
});
}
});
return false;
}
I just added dynamic variable to element:
success: function(data) {
$('#' + hash).replaceWith(data);
}
Related
I'm trying to send an associative array of key-value pair from client(javascript) to server(php). The size of the array or the values are not fixed. Need to forward the user selected options from one page to another. Not using forms
Tried using ajax, but php does not receive the array correctly. Using php7, jquery 2.4.1, sql server, javascript
javascript/jquery
var contributeArr = {};
$(document).on("change", ".contribute_txt", function() {
// some other code
contributeArr[this.id] = this.value;
});
$('#contri_submit').click(function(e) {
e.preventDefault();
var error = false;
var contributeArray = JSON.stringify(contributeArr);
var url = 'chapter.php';
var formData = new FormData();
if (error == false) {
formData.append("contributeArray", contributeArray);
}
else {
console.log("Something went wrong. Check your code.");
}
for (var pair of formData.entries()) {
console.log(pair[0]+ ', ' + pair[1]);
}
$.ajax({
type: "POST",
url: url,
data: formData,
cache: false,
processData: false,
contentType: false,
success: function(result) {
window.setTimeout(function() {
window.location.href = url;
}, 2000);
},error: function(xhr,request,error) {
alert(error);
}
});
return false;
});
php
foreach ($_POST['contributeArray'] as $key => $value) {
$_SESSION['contribution'][$key] = $value;
}
print_r($_SESSION['contribution']);
print_r($_POST);
Sample data from console log:
contributeArray, {"LECH":"10","MASC":"20","PMEM":"30","LVME":"50"}
note: not sure what // some other code is... assuming you have everything correct there for your purposes
and assuming you are validating your $_POST data...
var contributeArr = {};
$(document).on("change", ".contribute_txt", function() {
// some other code
contributeArr[this.id] = this.value;
});
$('#contri_submit').click(function(e) {
e.preventDefault();
var my_url_value = 'chapter.php';
var real_url_to_ajax_app = 'https://realdomain.com/realfile.php';
$.ajax({
type: "POST",
url: real_url_to_ajax_app,
data: contributeArr,
success: function(result) {
window.setTimeout(function() {
window.location.href = my_url_value;
}, 2000);
},error: function(error) {
console.log(error);
}
});
return false;
});
in your PHP:
// assuming you are initializing $_SESSION['contribution'] per your needs
foreach ($_POST as $key => $value) {
// validate key/value here
$_SESSION['contribution'][$key] = $value;
}
echo 'some helpful response';
exit; // required
Please use json_decode and include latest jQuery.
I can solve your code if you did not solved yet
I am trying to make a facebook and twitter style mention system using jquery ajax php but i have a problem if i try to #mention more then one user. For example if i start to type something like the follow:
Hi #stack how are you.
The results showing #stack but if i try to mention another user like this:
Hi #stack how are you. i am #azzo
Then the results are nothing. What i am missing my ajax code anyone can help me please ?
I think there is a regex problem for search user_name. When i write some username after first one like #stack then the ajax request posting this:
f : smen
menFriend : #stack
posti : 102
But if i want to tag my other friend in the same text like this:
Hi #stack how are you. I am #a then ajax request looks like this:
f : smen
menFriend : #stack, #a
posti : 102
So what I'm saying is that apparently, ajax interrogates all the words that begin with #. It needs to do is interrogate the last #mention from database.
var timer = null;
var tagstart = /#/gi;
var tagword = /#(\w+)/gi;
$("body").delegate(".addComment", "keyup", function(e) {
var value = e.target.value;
var ID = e.target.id;
clearTimeout(timer);
timer = setTimeout(function() {
var contents = value;
var goWord = contents.match(tagstart);
var goname = contents.match(tagword);
var type = 'smen';
var data = 'f=' +type+ '&menFriend=' +goname +'&posti='+ID;
if (goWord.length > 0) {
if (goname.length > 0) {
$.ajax({
type: "POST",
url: requestUrl + "searchuser",
data: data,
cache: false,
beforeSend: function() {
// Do Something
},
success: function(response) {
if(response){
$(".menlist"+ID).show().html(response);
}else{
$(".menlist"+ID).hide().empty();
}
}
});
}
}
}, 500);
});
Also here is a php section for searching user from database:
$searchmUser = mysqli_real_escape_string($this->db,$searchmUser);
$searchmUser=str_replace("#","",$searchmUser);
$searchmUser=str_replace(" ","%",$searchmUser);
$sql_res=mysqli_query($this->db,"SELECT
user_name, user_id
FROM users WHERE
(user_name like '%$searchmUser%'
or user_fullname like '%$searchmUser%') ORDER BY user_id LIMIT 5") or die(mysqli_error($this->db));
while($row=mysqli_fetch_array($sql_res,MYSQLI_ASSOC)) {
// Store the result into array
$data[]=$row;
}
if(!empty($data)) {
// Store the result into array
return $data;
}
Looks like you're sending an array which is result of match you in AJAX request.
Though I cannot test it but you can use a lookahead in your regex and use 1st element from resulting array. Negative lookahead (?!.*#\w) is used to make sure we match last element only.
var timer = null;
var tagword = /#(\w+)(?!.*#\w)/;
$("body").delegate(".addComment", "keyup", function(e) {
var value = e.target.value;
var ID = e.target.id;
clearTimeout(timer);
timer = setTimeout(function() {
var contents = value;
var type = 'smen';
var goname = contents.match(tagword);
if (goname != undefined) {
var data = 'f=' +type+ '&menFriend=' +goname[1] +'&posti='+ID;
$.ajax({
type: "POST",
url: requestUrl + "searchuser",
data: data,
cache: false,
beforeSend: function() {
// Do Something
},
success: function(response) {
if(response){
$(".menlist"+ID).show().html(response);
} else {
$(".menlist"+ID).hide().empty();
}
}
});
}
}, 500);
});
In My Codeigniter web application I'm using an ajax function to get some data from the database inorder to show it in the view.The data from database contains an image url and other fields.
My problem is that when I get the data in ajax success function, the image url looks like this:
<button id='product-1301' type='button' value=1301 class='blue' ><i><img src='assets\/uploads\/thumbs\/default.png'></button>
Since the url contains these characters \ my view is not rendering properly. I tried using stripslash function to remove this. But didn't work. I didn't know where am going wrong.
my ajax function
$.ajax({
type: "get",
url: "index.php?module=pos&view=ajaxproducts1",
data: {category_id: cat_id, per_page: p_page},
dataType: "html",
success: function(data) {
var x= data;
alert(x);
if(data!=1)
{
$('#proajax').empty();
var newPrs = $('<div></div>');
newPrs.html(data);
newPrs.appendTo("#proajax");
//$('#gmail_loading').hide();
}
else
{
bootbox.alert('Product is Not Available in this Category!');
$('#gmail_loading').hide();
}
}
});
Controller
function ajaxproducts1()
{
$mn;$data1;
$img="assets/uploads/thumbs/default.png"; //this is my image path, when this comes in ajax success,\ character adds
$img=str_replace('\"', '', $img);
if($this->input->get('category_id')) { $category_id = $this->input->get('category_id'); }
if($this->input->get('per_page')) { $per_page = $this->input->get('per_page'); }
if($item = $this->pos_model->getProductsByCategory($category_id,$per_page))
{
foreach ($item as $i)
{
$button="<button id='product-".$i->id."' type='button' value=".$i->id." class='blue' ><i><img src='".$img."'><span><span>".$i->name;
$mn=$mn.$button;
}
$data1=$mn;
}
else
{
$data1=1;
}
echo json_encode($data1);
}
Can anyone help me with this ?
Try this:
// use an array to gather up all the values
// call encodeURIComponent() on the variables before adding them
// join them all together and pass them as "data"
var tempVars=['module=pos&view=ajaxproducts1'];
tempVars.push('category_id='+encodeURIComponent( cat_id ));
tempVars.push('userInfo='+encodeURIComponent( p_page ));
var sendVars=tempVars.join('&');
$.ajax({
type: "get",
url: "index.php",
data: sendVars,
dataType: "text",
success: function(data) {
var x = data;
alert(x);
if (data != 1) {
$('#proajax').empty();
var newPrs = $('<div></div>');
newPrs.html(data);
newPrs.appendTo("#proajax");
//$('#gmail_loading').hide();
} else {
bootbox.alert('Product is Not Available in this Category!');
$('#gmail_loading').hide();
}
}
});
My issue was solved by using jQuery.parseJSON function.
Allow me to elaborate.
I have this Ajax script which is fetching for one thing. The refresh_on.
What does it do? It either returns 0 OR 1.
function startRefresh() {
setTimeout(startRefresh, 60000);
$.ajax({
url: 'refresh.php',
type: 'POST',
dataType: 'JSON',
data: {task: "reload"},
success: function(data) {
$.each(data, function(i, attr){
if (attr.refresh_on == 0) {
//this doesn't work
/*Write/return this in JavaScript:*/ line[1]="Offline.";
} else {
//this doesn't work
/*Write/return this in JavaScript:*/ line[1]="Online.";
};
})
}
});
}
If the ajax returns with refresh_on == 0 OR refresh_on == 1 - I want it to print its respective array item. It must be an array item.
</head>
<body>
<script type="text/javascript">
var line=new Array()
startRefresh();
//output either "line[1]=\"Offline.\""; or "line[1]=\"Online.\"";
</script>
</body>
This is the PHP file:
if (isset($_POST['task']) && $_POST['task'] == "reload") {
$stmt = $connection->prepare("SELECT refresh_on FROM refresh");
$stmt->execute();
$result = $stmt->get_result();
$encode = Array();
while ($row = $result->fetch_assoc()) {
$encode[] = $row;
}
echo json_encode($encode);
}
If it matters - this is the JSON response:
[{"refresh_on":1}]
Is there a way to insert/output/print the array item using the function?
Any help would be appreciated.
So there's a couple things that might be going on here, but to begin, you're wrapping your variable in a quote, so all that is happening is a string is being made and immediately being dropped to the floor. Let's start off by doing something like the following:
function startRefresh() {
setTimeout(startRefresh, 60000);
$.ajax({
url: 'refresh.php',
type: 'POST',
dataType: 'JSON',
data: {task: "reload"},
success: function(data) {
$.each(data, function(i, attr){
if (attr.refresh_on == 0) {
//this doesn't work
line[1] = "Offline.";
} else {
//this doesn't work
line[1]= "Online.";
};
})
}
});
}
Now, if I recall correctly, the ajax function is going to be calling your success callback, which is going to take over your local scope. I don't believe line is going to be accessible to that callback, so we should/could actually move that callback to its own function within a closure:
<script type="text/javascript">
(function() {
var line = [];
startRefresh();
function startRefresh() {
setTimeout(startRefresh, 60000);
$.ajax({
url: 'refresh.php',
type: 'POST',
dataType: 'JSON',
data: { task: "reload" },
success: refreshResponse
});
}
function refreshResponse(data) {
$.each(data, function(i, attr) {
if (attr.refresh_on == 0) {
line[1] = "Offline.";
} else {
line[1] = "Online.";
}
});
}
})();
</script>
We've wrapped that in a self executing function to give us some nice encapsulation to work with, and because line is in a function which refreshResponse is found, that variable should be accessible to it.
But we're not done yet!
For one, we could easily make that variable assignment a little easier, like so:
line[1] = (attr.refresh_on == 0) ? "Offline." : "Online.";
...and we're also going to want to triple up on that equality statement, just to avoid variable coercion:
line[1] = (attr.refresh_on === 0) ? "Offline." : "Online.";
Give that a shot and let's see where we're at.
Not sure what you are expecting "line[1]=\"Offline.\""; to do, but it's not going to do anything. Perhaps you mean: line[1]= "Offline";? Try putting this line of code there instead to test that it's working: console.log('Offline');
If the line is getting executed and you see the output in your console, you would just have to target some HTML element that you want to put the "Offline" string into, for instance:
<div id="status"></div>
<script>
....
var status = document.getElementById("status");
if (attr.refresh_on == 0) {
status.textContent = "Offline";
} else {
status.textContent = "Online";
};
....
</script>
hey guys i read some of the other posts and tried alot but its still not working for me.
when i alert the array i get all the results on the first site but after sending the data to php i just get an empty result. any ideas?
$(document).ready(function() {
$('#Btn').click(function() {
var cats = [];
$('#cats input:checked').each(function() {
cats.push(this.value);
});
var st = JSON.stringify(cats);
$.post('foo.php',{data:st},function(data){cats : cats});
window.location = "foo.php";
});
});
Php
$data = json_decode($_POST['data']);
THANK YOUU
my array looks something like this when i alert it house/flat,garden/nature,sports/hobbies
this are a couple of results the user might choose (from checkboxes).
but when i post it to php i get nothing. when i use request marker (chrome extension) it shows me something likethat Raw data cats=%5B%22house+themes%22%2C%22flat+items%22%5D
i also tried this way-- still no results
$(document).ready(function() {
$('#Btn').click(function() {
var cats = [];
$('#cats input:checked').each(function() {
cats.push(this.value);
alert(cats);
$.ajax({
type: 'POST',
url: "foo.php",
data: {cats: JSON.stringify(cats)},
success: function(data){
alert(data);
}
});
});
window.location = "foo.php";
});
});
php:
$json = $_POST['cats'];
$json_string = stripslashes($json);
$data = json_decode($json_string, true);
echo "<pre>";
print_r($data);
its drives me crazy
Take this script: https://github.com/douglascrockford/JSON-js/blob/master/json2.js
And call:
var myJsonString = JSON.stringify(yourArray);
so now your code is
$(document).ready(function() {
$('#Btn').click(function() {
var cats = [];
$('#cats input:checked').each(function() {
cats.push(this.value);
});
var st = JSON.stringify(cats);
$.post('foo.php',{data:st},function(data){cats : cats});
// window.location = "foo.php"; // comment this by this page redirect to this foo.php
});
});
//and if uou want toredirect then use below code
-------------------------------------------------
$.post('foo.php',{data:st},function(data){
window.location = "foo.php";
});
---------------------------------------------------
Php
$data = json_decode($_POST['data']);
var ItemGroupMappingData = []
Or
var ItemGroupMappingData =
{
"id" : 1,
"name" : "harsh jhaveri",
"email" : "test#test.com"
}
$.ajax({
url: 'url link',
type: 'POST',
dataType: "json",
data: ItemGroupMappingData,
success: function (e) {
// When server send response then it will be comes in as object in e. you can find data //with e.field name or table name
},
error: function (response) {
//alert(' error come here ' + response);
ExceptionHandler(response);
}
});
Try this :-
$data = json_decode($_POST['data'], TRUE);
I think you should move the "window.location = " to the post callback, which means it should wait till the post finshed and then redirect the page.
$.post('foo.php', {
data : st
}, function(data) {
window.location = "foo.php";
});