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Calling a JavaScript function returned from a Ajax response
var url = "showpdf.php";
$.ajax({
type: "post",
url: url,
data: {academic:academic,uni:uni,course:course,lan:lan,sem:sem,subject:subject,type:type,clz:clz},
success: function(response)
{
alert(response);
document.getElementById("alldata").innerHTML = response;
}
});
inside response i have bellow html code with simple JavaScript function
<label onclick="popup()"> clickme </label>
<script>
function popup()
{
alert("hello");
}
</script>
here, this popup()function is not working please help me.
The problem is you expect that Javascript contained within an ajax response is executed. This isn't the case, the browser doesn't execute any Javascript contained within ajax responses. It might be possible to try to parse out the Javascript and execute it in some way, such as eval() but that would be nasty and not a good idea. Using eval() you also have to consider that it will only accept valid Javascript, so you couldn't just pass your response to it because that includes some HTML.
A possible solution could be to have the popup() function already defined in the page or an external Javascript file, and to assign the click handler after you add the HTML to the DOM.
For example:
function popup()
{
alert(this.id);
}
document.getElementById("alldata").innerHTML = response;
document.getElementById("myNewLabel").onclick = popup;
Make that string hidden in your page and just display it on success. like:
<label onclick="popup()" id="mylable" style="display:none"> clickme </label>
<script>
function popup()
{
alert("hello");
}
</script>
var url = "showpdf.php";
$.ajax({
type: "post",
url: url,
data: {academic:academic,uni:uni,course:course,lan:lan,sem:sem,subject:subject,type:type,clz:clz},
success: function(response)
{
// alert(response);
$("#mylable").show();
}
});
Better way to try with DOM. Let me know if above code is work for you.
Related
Is it possible to mix post and get in ajax? Specifically have a form POST data to a url with get variables?
In html and PHP I would normally do this:
<form action="script.php?foo=bar" method="POST">
...insert inputs and buttons here...
</form>
And the PHP script would handle it based on logic/classes.
I have tried the following and several variations to no avail:
$(document).ready(function() {
$('#formSubmitButton').click(function() {
var data = $('#valueToBePassed').val();
$.ajax({
type: "POST",
//contentType: 'application/json',
url: "script.php?foo=bar",
data: data,
processData: false,
success: function(returnData) {
$('#content').html( returnData );
}
});
});
});
Is this even possible? If so what am I doing wrong. I do not feel as if I am trying to reinvent the wheel as it is already possible and used regularly (whether or not if it is recommended) by plenty of scripts (granted they are php based).
Please check out the below jsfiddle URL and
https://jsfiddle.net/cnhd4cjn/
url: "script.php?data="+data, //to get it in the URL as query param
data:"data="+data, // to get it in the payload data
Also check the network tab in dev tools to inspect the URL pattern on click of the submit button
You can, here's what I do.
$(document).ready(function() {
$('#formSubmitButton').click(function() {
// My GET variable that I will be passing to my URL
getVariable = $('#valueToBePassed').val();
// Making an example object to use in my POST and putting it into a JSON string
var obj = {
'testKey': 'someTestData'
}
postData = JSON.stringify(obj);
// Jquery's AJAX shorthand POST function, I'm just concatenating the GET variable to the URL
$.post('myurl.com?action=' + getVariable, postData, function(data) {
JSONparsedData = $.parseJSON(data);
nonparsedData = data;
});
});
});
I can see 1 syntax error in you code .
use
data: {data:data},
instead of
data: data,
and then try to access like
$_POST['data']; and $_GET['foo'];
But i have never tried the GET params inside a POST request :) , this is only a suggestion.
I'm trying to figure out how I can load a partial page (div) into another div using AJAX in my php page.
basically I have a div with some php output stuff, and I need to put that div's content into another one using ajax but my code doesn't do anything (it doesn't put the div's content into the other one).
this is my current code:
<script type="text/javascript">
$(document).ready(function () {
function load() {
$.ajax({
type: "GET",
url: "<?php echo $actual_link; ?>",
dataType: "html",
success: function(response) {
// $("#ajaxContent").html(response);
$("#issomeone").html($(response).find("#notis"));
setTimeout(load, 4000);
}
});
}
load();
});
</script>
so the #notis div holds the php output and the #issomeone div is the div that i need to put the stuff in using ajax.
is there something missing in my code or I'm just doing it all wrong?
any help would be appreciated.
Thanks
EDIT:
THIS DOESN'T DO ANYTHING:
<script type="text/javascript">
$(document).ready(function () {
function load() {
$.ajax({
type: "GET",
url: "<?php echo $actual_link; ?>",
dataType: "html",
success: function(response) {
// $("#ajaxContent").html(response);
//$("#issomeone").html($(response).find("#notis"));
$('#issomeone').load("<?php echo $actual_link; ?> #notis");
setTimeout(load, 4000);
}
});
}
load();
});
</script>
You are finding the DOM element and then trying to set that as target element's innerHTML with html(). You in essence have a type mismatch.
You would need to get the innnerHTML of #notis to pass as the parameter to this function so:
$("#issomeone").html($(response).find("#notis").html());
Alternately, you could append the node if you want to keep the whole #notis element
$("#issomeone").append($(response).find("#notis"));
But really, since you are using a straight GET, you might be better off simply doing:
$('#issomeone').load('<?php echo $actual_link; ?> #notis');
This provides a more simple abstraction to what you are trying to do more manually with .ajax()
I would however encourage you to not get in the habit of loading full HTML pages and then scraping them for some particular element. It is better design architecture to have the AJAX target script serve up only content that is needed when possible.
I'm trying to figure this out from 2 hours with no luck, maybe it's not that technical but I need help!
I've an AJAX script that needs to send a GET request to a php script that's on the same page.
The PHP script terminates like this
if ($success) {
print( $state );
}?>
The Javascript is rightly under the php termination and is this.
<script>
$('table button').click( function() {
var button = $(this);
/* if button inside the table is clicked */
var username = button.parent().parent().children('td').html();
var state = button.html();
/* send GET request */
$.ajax({
type: "GET",
url: 'index.php',
data: 'username='+username+'&state='+state,
success: function(response) {
alert(response);
}
});
});
</script>
What I don't understand is why I get the alert containing this text
inside // this is the state, so it's good
<script> // this is the script, not good
$('table button').click( function() {
var button = $(this);
/* if button inside the table is clicked */
var username = button.parent().parent().children('td').html();
var state = button.html();
/* send GET request */
$.ajax({
type: "GET",
url: 'index.php',
data: 'username='+username+'&state='+state,
success: function(response) {
alert(response);
}
});
});
</script>
I've to manipulate the HTML on success by I'm not able to do that because of the messy response that I get from my php code. I'm not sure if I've to post other code. If you need to know more just ask, I'll reply as soon as possible.
Any characters outside <?php ?> tags are sent back in the response. That's how you get that <script> tag in the first place when you access index.php from the browser.
echo and print are obviously going to also send data.
So I guess you should have that if($success) at the begining of index.php and exit; inside it, after print.
Characters outside <?php ?> tags are sent as part of the response for historical and practical reasons.
In our days having PHP code mixed with HTML is a bad practice (as some people already pointed out in the comments bellow). You either use a templating engine (most people know about Smarty) or use PHP itself as a templating engine.
But "back in the day" PHP started out as just a simple templating engine (no classes, external modules, namespaces, autoloaders, etc.), so mixing HTML with PHP was basically the purpose of this language.
As I said, today we still use PHP as a templating language so mixing PHP (control structures, loops) and HTML works.
A quick, but not recommended fix is to avoid the javascript content on an ajax request
Just demonstrating, how it could be,
if($success) {
print( $state );
}
if(!isset($_GET['ajax_call']))
{ ?>
<script>
$('table button').click( function() {
var button = $(this);
/* if button inside the table is clicked */
var username = button.parent().parent().children('td').html();
var state = button.html();
/* send GET request */
$.ajax({
type: "GET",
url: 'index.php?ajax_call=1',
data: 'username='+username+'&state='+state,
success: function(response) {
alert(response);
}
});
});
</script>
<?php
}?>
.....
and you should note that the new ajax call has an additional variable, ajax_call,
This is a quick fix, for you to move on, but i suggest you to use an MVC framework.
I have a PHP program for counting user banner clicks. My banner link is something like this:
<a href="<?=$banner_url;?>" onclick="banner_click_count('<?=$banner_id;?>')"><img src=...>
When user clicks on image, it runs banner_click_count() function with $banner_id as parameter.
function banner_click_count($ban_id)
{
$.ajax({
type: "POST",
url: 'banner_click.php',
data: {banner_id: $ban_id}
});
}
At banner_click.php, I get the banner_id with $banner_id = $_GET['banner_id']);, search the database based on it. Find the record, then add 1 to banner_count column field. After that, redirect to banner_url.
When I run the program, I get Parse error: parse error, expecting T_VARIABLE' or '$'' on line $.ajax({
Addendum: the error is cleared with all your help, but when I click on the link it redirects to banner_url directly and does not run the AJAX function.
Addendum:I put the alert("hello"); at the top of ajax function and i got it. So it goes into function
1.You need to put your javascript function under <script> tag
2.you need to pass json string as post data
3.though you are passing your data as post so you will get this data in php as $_POST not $_GET
So change your function as below
<script>
function banner_click_count(ban_id)
{
$.ajax({
type: "POST",
url: 'banner_click.php',
data: {banner_id: ban_id}
});
}
</script>
// in your php use as below
echo $_POST['banner_id']
Make sure banner_id is in quotes and that you are including JQuery in your page.
And don't forget a success/error return.
$.ajax({
type: "POST",
url: 'banner_click.php',
data: {'banner_id': $ban_id},
success: function(s) {
console.log('success' + s);
},
error: function(e) {
console.log('error' + e);
}
});
Don't we need a return false before the function ends?
I found the solution. Thanks to all.
function banner_click_count(ban_id)
{
$.post(
"banner_click.php",
{
banner_id: ban_id
});
}
UPDATE: Wow that was the fastest response ever and so many answers in minutes of each other. Amazing. Ok here is what I am trying to do. http://edvizenor.com/invoice33/
I want to edit this invoice on the fly but when I hit the BLUE BOX at the top I want to preview or see this content on the next page contained php var echoed out.
This blue box will change later to be a button at the bottom but for testing I am using it.
As you see it calls the ajax script but I need the edited content of the div to be sent a php var to I can echo it on the preview page. If I can put it in a php var I do what I will with it on the next page. Does that make sense? Thanks guys for your quick responses.
OLD POST
Is it possible to get the contents of a div using jQuery and then place them in a PHP var to send via GET OR POST?
I can get the contents of the div with jQuery like this:
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script>
$(document).ready(function()
{
$("#MyButton").click(function()
{
var htmlStr = $("#MyDiv").html();
});
});
</script>
But how do I put the jQuery var in a php var. I need to do this by a BUTTON press too. This is not included in the code above. I need because the div file is changeable and when I hit UPDATE and send via PHP it needs to have the latest content.
According to your situation,
You are trying to send JavaScript variable to PHP.
The only common way to do this is to exchange in JSON format,
for example, suppose we have basic text editor
Jquery:
$($document).ready(function(){
$("#submit-button").click(function(){
$.post('yourphpscript.php', {
//this will be PHP var: //this is JavaScript variable:
'text' : $("#some_text_area").text()
}, function(response){
//To avoid JS Fatal Error:
try {
var result = JSON.parse(response);
//get back from PHP
if ( result.success){ alert('successfully changed') }
} catch(e){
//response isn't JSON
}
});
});
});
PHP code
<?php
/**
*
* So we are processing that variable from JavaScript
*/
if ( isset($_POST['text']) ){
//do smth, like save to database
}
/**
* Well if you want to show "Success message"
* that div or textarea successfully changed
* you can send the result BACK to JavaScript via JSON
*/
$some_array = array();
$some_aray['success'] = true;
die( json_encode($some_array) );
You'll need to use ajax to send the value to your server.
var html = $('#myDiv').html();
$.ajax({
type: 'POST',
url: '/SomeUrl/MyResource.php',
data: JSON.stringify({ text: html }),
success: function(response)
{
alert('Ajax call successful!');
}
});
The thing you need is AJAX (see http://en.wikipedia.org/wiki/Ajax_(programming))
The basic idea is to send a http request with javascript by e.g. calling a php script and wait for the response.
With plain Javascript AJAX requests are a bit unhandy, but since you are already using jQuery you can make use of this library. See http://api.jquery.com/jQuery.ajax/ for a complete overview.
The code on client side would be something like this:
$.ajax({
url:'http://example.com/script.php',
data:'var=' + $('#myDiv').html(),
type:'GET'
success:function(response) {
console.log(response) // Your response
},
error:function(error) {
console.log(error) // No successful request
}
});
In your script.php you could do something like this:
$var = $_GET['var'];
// Do some processing...
echo 'response';
and in your javascript console the string response would occur.
In modern ajax based applications the best practise way to send and receive data is through JSON.
So to handle bigger datasets in your requests and responses you do something like this:
$.ajax({
url:'http://example.com/script.php',
data:{
var:$('#myDiv').html()
},
type:'GET'
success:function(response) {
console.log(response) // Your response
},
error:function(error) {
console.log(error) // No successful request
}
});
And in your PHP code you can use the $someArray = json_decode($_GET['var']) to decode JSONs for PHP (it will return an associative array) and $jsonString = json_encode($someArray) to encode an array to a JSON string which you can return and handle as a regular JSON in your javascript.
I hope that helps you out.
You can use hidden form fields and use jQuery to set the value of the hidden field to that, so when the button is clicked and form submitted, your PHP can pick it up as if it were any other form element (using $_POST). Alternatively, you can use AJAX to make an asynchronous request to your PHP page. This is probably simpler. Here's an example:
$("#myButton").click(function() {
var htmlStr = $('#myDiv').html();
$.post("mypage.php", { inputHTML : htmlStr },
function(data) {
alert("Data returned from mypage.php: " + data);
});
}
Yes, Its possible
<script type="text/javascript">
$(document).ready(function(){
$('#MyButton').click(function(){
$.post('sendinfo.php',
{
data: $('#data').html()
},
function(response){
alert('Successfully');
});
});
});
</script>
<div id="data">Here is some data</div>
Use ajax for sending value to php (server).. here's a good tutorial for ajax with jquery http://www.w3schools.com/jquery/jquery_ajax.asp
you should just use Ajax to send your variable.
$.ajax({
url:'whateverUrl.php',
type:'GET',
data:{
html : htmlStr
}
});
Using AJAX:
$("#MyButton").click(function() {
var htmlStr = $("#MyDiv").html();
$.ajax({
url: "script.php",
type: "POST",
data: {htmlStr : htmlStr},
success: function(returnedData) {
//do something
}
});
});
Something like below should work.
Read more: http://api.jquery.com/jQuery.post/
$("#YourButton").click(function(e){
e.preventDefault();
var htmlStr = $("#YourDiv").html();
$.post(
url: 'YourPHP.php',
data: '{"htmlStr" : "'+htmlStr+'"}',
success: function(){
alert("Success!");
}
);
});
Send the data via XmlHttpRequest ("ajax") to your php page either via POST or GET.