I have a website with external like buttons (from likebtn.com) on it. To encourage users to use them I have a script that randomly gives likes to random posts. However I have the problem that this could only be done via the REST API from likebtn.com if the post already has min 1 Like from a button click. It is not possible for me to send an API request to achieve this (as told by likebtn.com support).
My question now is:
Is it possible (with javascript) to run a cron that opens the url with the post and clicks the like button once?
Any help or tips are appreciated!
I am not sure if I understand your question correctly but you could do something like this.
Run this code from a cronjob on set intervals. It simulates the click of the like button on page load.
http://jsfiddle.net/m3gN2/1/
<?php ?>
<button id="virtualLike">Like Me!</button>
<script>
var likeBtn = document.getElementById('virtualLike'); // get a reference to your element
likeBrn.onclick = clickHandler; // assign its click function a function reference
function clickHandler() {
alert("Button is clicked");
}
document.getElementById('virtualLike').click();
</script>
<?php ?>
Let me know if it was what you wanted and if it works for you.
Related
I have a problem. It is my full honor if anyone helps.
First, let me explain the workflow I want. My CMS is Wordpress. I have a webpage (views.php). In this page, I want to show a download button (id=” download-button”) just to users who has the role subscriber. In default, no one has the role subscriber. So, the button is hidden in default. When a user buys a specific product he gains the role subscriber. Now, suppose a user has opened views.php page as a tab in his browser. In this step, the button is hidden. After that, he opens another tab and buys that specific product and he gains the role subscriber. Now, if he refresh the view.php page, the download button is seen. But, I want the user to see the download button without refreshing the page. In this regard, I wrote button.php file to be called in ajax. However, it does not work.
My codes:
html code (written in view.php which is the place of download button):
<div id="div1"></div>
my javascript code (which is put inside view.php file):
<script>
$(document).ready(function(){
$("button").click(function(){
$("#div1").load("button.php");
});
});
</script>
my button.php code:
<?php
if (check_user_role(array('subscriber'))) {
echo ('<button id="download-button">Download</button>');
}
?>
I should note that I have written check_user_role php function in views.php.
It would be my honor if you help.
Thanks in advance.
Milad
As stated by smartdroid in one of the answers above, you can subscribe an event listener function to the window.onfocus event. Try following:
document.addEventListener("DOMContentLoaded", function (event) {
window.onfocus = function () {
$("#div1").load("button.php");
}
});
I highly recomment you to read further into javascript events.
For plain javascript:
https://www.w3schools.com/js/js_events.asp
For jQuery:
https://api.jquery.com/category/events/
Hey you have to use Window setInterval() Method, what this method does it will fire in background at your time interval set.
You can call your ajax code to set/show your button
setInterval(function(){
$("#div1").load("button.php");
}, 3000);
Make sure once you do add this button put return false so it wont execute again and again not to increase load on webpage.
$(document).ready event runs only once after the DOM is loaded. So this event will not fire unless page is reloaded.
If the user is buying a subscription in another browser tab and then returns to the original tab, windows.onfocus event will fire.
So you can use window.onfocus event to check for subscription every time view.php tab becomes active, and then show the button when necessary. So you can use something like the following, in your view.php
$(document).ready(function(){
window.onfocus = function () {
$("#div1").load("button.php");
}
});
Add an iframe to your view.php that doesn't need to contain anyting nor be visible.
<iframe name="download" id="if_download" src="blank.html"></iframe>
Target the download-action to the iframe. With some JS:
function download(href) {
window.frames['download'].location = 'download.php?file=' + href;
return false;
}
You may need to wrap the download-action through a php-file to modify its header
download.php:
$file_name = $_GET['file'];
//validate file exists and *remove any ../ - simple:
if (strpos($file_name, '/') !== false) die('yeah right..');
header("Content-Disposition: attachment;filename=\"$file_name\"");
echo file_get_contents($file_name);
die();
I work in advertising. I have a client who has a tracking tag implemented on page load on their advertiser's site. The tracking tag is just a script that calls the JavaScript contained within.
The client is running into a dilemma because they want to trigger another tag when a specific button on the page is clicked on. I don't know the reasoning, but the advertiser's web developers said that it would take them weeks to make the change and the client is aiming to get the tracking set up as soon as possible.
The client's only means of access to the advertiser's page is through the tracking tag called on page load. The client wants to call some JavaScript from the tag that fires on page load that executes a certain function with the button is clicked on. I guess this would involve writing some JavaScript to the document so that it is usable when the button is clicked on.
Questions:
1) Is this possible? In other words, can I take some JavaScript that executes on page load and use it to modify elements on the page?
2) If the button already has another onclick function attached, can we add a second one? The button has a 'class' attribute attached, so could I develop some JavaScript to search for that class attribute and append a second onclick to it? Or would that override the first one?
Note: I cannot use document.write. Would document.appendchild work? Any tips would be appreciated.
To clarify what I want to do again:
1) Trigger JavaScript file on page load.
2) From within that JavaScript file, send a function to the document/page, and attach the reference to that function to a button with a specific class attribute on the page via an onclick attribute.
3) I do not want to override any existing onclick function on the button.
Thanks,
Update:
Here's what I have so far.
<html>
<head>
<script>
function myFunction (){
//do something
}
document.getElementsByClassName('test').onclick = myFunction();
</script>
</head>
<body>
<button class="test"> Submit Request </button>
</body>
</html>
I want to make it so that when the script in the header loads, myFunction is called from the button with class "test". Am I on the right track?
Update 2: Would using setAttribute work?
<html>
<body>
<script>
function myFunction (){
//do something
}
document.getElementsByClassName('test')[0].setAttribute("onclick", "myFunction()");
</script>
<button class="test"> Submit Request </button>
</body>
</html>
<script type="text/javascript">
confirm("Delete user?.");
window.location.href = "users.php";
</script>
$qqq = mysql_query("DELETE from users WHERE panelistname='$theuser'") or die(mysql_error())
considering the code above, (inside a php file, so no worries with certain syntax errors you might notice) the problem here is that when click cancel on the confirm() dialog box that will show up. the delete action still executes. This question might be considered a double since, yeah, I found some questions relevant to this one but I just can't fixed this one myself.
the one I found codes it something like this:
"if (confirm('Are you...?')) commentDelete(1); return false"
I can't find a way to solve this problem, I don't know which part should I insert the SQL command(delete) in this format. Please someone show me how to do this right. :) thanks!
EDIT: I just saw that Nick Zuber posted a similar answer around 1 minute before I posted mine (actually, while I was writing it :P)
I don't clearly understand what you are trying to do.
You want to show the user a confirm window, and if they click Yes, delete some entry in the database, and if they click No, redirect them to the page 'users.php' ?
If it's what you want to do, then you can't do it like this. You can't use JS conditions with PHP. The PHP code is executed server-side (in the server), whereas the JS code is executed client-side (in the browser). What you would need is to do something like this:
warning: don't use this code, it's unsecure and shouldn't ever be used in a real app, it's just to show you how the whole thing works
(IN USERS.PHP)
if(isset($_GET['delete_dat_user']))
{
$qqq = mysql_query("DELETE from users WHERE panelistname='" . $_GET['delete_dat_user'] . "'") or die(mysql_error());
}
(IN THE WEBPAGE)
if(confirm('u serious u want to delete the user'))
{
window.location = 'users.php?delete_dat_user=theUserName';
}
else
{
nope
}
When your page loads, the PHP on your page will automatically execute, regardless of your JavaScript. Instead, try to prompt the user if they want to delete the account and if they click yes redirect them to a page that has your PHP query.
Also, the confirm function returns a boolean value depending on which option is clicked by the user. Try putting it in an if statement:
if(confirm("Delete user?.")){
window.location.href = "delete_user_page.php";
}else{
// cancel was clicked
}
How can i add this JS into a link:
Im in page1.php;
I need click in some link Link
And when i go to page2.php some code load this JS:
javascript:void(lz_chat_change_state(true,false));
Any help?
It seems to be simple but not for me......
Solved !
If page1 has ?chat i execute the javascript in page2;
Link in page1.php?chat
In page2.php
if (isset($_GET['chat'])) {
include_once("js-externo.php");
}else{
// Fallback behaviour goes here
}
In file js-externo.php i put:
window.onload = function() {
void(lz_chat_change_state(true,false));
}
Do you mean you want to call that function when you click on the link?
If yes
Make javascript file seperate.
Inside the link you put a "onclick" event and call the javascript function as:
<a href="page2.php" onclick = "lz_chat_change_state('true','false')">
If you want things to change after going to page2.php particularly then you need to use sessions. Pass a value from page1 to page2. But looking at your function (which I assume is being used as a toggle) it's not necessary.
I've been googling the whole day for this... I'm still a beginner at html/css/php/javascript, so I probably have some rookie mistakes, but that's why you guys are here to help me!
So, I have a dynamic website with a static template and dynamically loaded content. For example, when I click the "About Us" link, the template remains the same, but the content gets loaded from another .php file and printed out in a iframe in that same index, using the $_GET method. I'm using iframe so I don't affect the template layout. My problem is that my .js file with animations gets executed each time I click any of the navigation links, so it makes my wish to, for example, fade in the whole website once it's loaded impossible. Each time I click a link the entire website would dissapear and fade in again. I don't know did I use Google wrong, but I cannot find the solution to my problem. I only want that script to run once when the page is loaded, not whenever I click a link! Here are some parts of the code:
Part of index.php:
<?php
include('setup/setup.php');
?>
<html>
<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
<script src="javascript.js"></script>
<body>
<div class="wrapOverall">
<div class="header">Logo, language buttons etc.</div>
<div class="wrapMainNav">Main navigation (Home, About us etc.)</div>
<div class="content">
<iframe src=<?php echo "content_$language/$pg.php"; ?> frameborder="0" style="width:951px; height:486px;">aaa</iframe>
</div>
</div>
</body>
</html>
where "content_$language" is the folder from which I get the file, and "$pg.php" is the file itself.
The setup.php file:
<?php
error_reporting(E_ALL ^ E_NOTICE);
if($_GET['page'] == '')
{
$pg = 'naslovna';
}
else
{
$pg = $_GET['page'];
}
if($_GET['lang'] == '')
{
$language = 'cro';
}
else
{
$language = $_GET['lang'];
}
?>
The javascript.js file:
$(document).ready(function() {
$(".wrapOverall").hide(); //Hide the website
$("html").css("visibility", "visible");
var bg = new Image();
bg.src = "images/background.jpg";
bg.onload = function(){ //Load the background image
$("html").css("background-image", "url(images/background.jpg)");
$("html").css("background-repeat","no-repeat");
$("html").css("background-attachment", "fixed");
$("html").css("background-position", "center");
$(".wrapOverall").fadeIn(1000); //Fade in the site
$(".content").animate({height:'468px'},1000); //Animate content loading
}
});
That's about it, if you guys think you need more code I can send it.
Each time you click a link, and the URL changes, the browser makes a GET request to the server for that page. PHP will return the page and the browser will reload it, even if it's 95% the same as the last page you were on. It'll re-render the DOM and hence the $(document).ready event will fire again.
What you're looking to do is to refresh a part of the page without making a GET request to the server for the whole page. To do this you need to use AJAX.
One of the simplest ways to do this is using jQuery's load() method (click for documentation).
Have a look at the documentation and try a simple example, hopefully that will get you started.
NOTE: as has been mentioned already in the comments, there are plenty of frameworks that try to make achieving this functionality easier. Take a look at backbone.js, angularjs and ember.js to name a few. They also add a lot more, so depending on what you're trying to do, might be overkill, but it's worth a look.
Since your javascript is included in every page, it runs each time the page loads, and therefore hides and then shows the whole page. You should exclude it when loading other pages.
Have you tried to call the the iframe content with ajax ? That way the php will be called in the same time than your js functions.