Posting a php variable from one page to another using javascript - javascript

I'm trying to send a a php variable to another page using JS. My hopeless attempt so far:
header.php:
<script>
var county = "<?php echo $county; ?>";
$.post("ajax.php",county);
</script>
ajax.php:
<?php
$county = $_POST['county'];
echo $county;
?>
For context, I'm attempting to refine an infinite scroll script (http://www.inserthtml.com/2013/01/scroll-pagination/).
I am currently using this script and want to add to it:
(function($) {
$.fn.scrollPagination = function(options) {
var settings = {
nop : 10, // The number of posts per scroll to be loaded
offset : 0, // Initial offset, begins at 0 in this case
error : 'No More Posts!', // When the user reaches the end this is the message that is
// displayed. You can change this if you want.
delay : 500, // When you scroll down the posts will load after a delayed amount of time.
// This is mainly for usability concerns. You can alter this as you see fit
scroll : true // The main bit, if set to false posts will not load as the user scrolls.
// but will still load if the user clicks.
}
// Extend the options so they work with the plugin
if(options) {
$.extend(settings, options);
}
// For each so that we keep chainability.
return this.each(function() {
// Some variables
$this = $(this);
$settings = settings;
var offset = $settings.offset;
var busy = false; // Checks if the scroll action is happening
// so we don't run it multiple times
// Custom messages based on settings
if($settings.scroll == true) $initmessage = '';
else $initmessage = 'Click for more';
// Append custom messages and extra UI
$this.append('<div class="content"></div><div class="loading-bar">'+$initmessage+'</div>');
function getData() {
// Post data to ajax.php
$.post('ajax.php', {
action : 'scrollpagination',
number : $settings.nop,
offset : offset,
}, function(data) {
// Change loading bar content (it may have been altered)
$this.find('.loading-bar').html($initmessage);
// If there is no data returned, there are no more posts to be shown. Show error
if(data == "") {
$this.find('.loading-bar').html($settings.error);
}
else {
// Offset increases
offset = offset+$settings.nop;
// Append the data to the content div
$this.find('.content').append(data);
// No longer busy!
busy = false;
}
});
}
getData(); // Run function initially
// If scrolling is enabled
if($settings.scroll == true) {
// .. and the user is scrolling
$(window).scroll(function() {
// Check the user is at the bottom of the element
if($(window).scrollTop() + $(window).height() > $this.height() && !busy) {
// Now we are working, so busy is true
busy = true;
// Tell the user we're loading posts
$this.find('.loading-bar').html('Loading images');
// Run the function to fetch the data inside a delay
// This is useful if you have content in a footer you
// want the user to see.
setTimeout(function() {
getData();
}, $settings.delay);
}
});
}
// Also content can be loaded by clicking the loading bar/
$this.find('.loading-bar').click(function() {
if(busy == false) {
busy = true;
getData();
}
});
});
}
})(jQuery);
var county = "<?php echo $county; ?>";
$.ajax({
type: "POST",
url: "ajax.php",
data: {county:county},
success: function (data)
{
alert(data);
}
});
UPDATE:
It is now working. Thanks for your help.

Try this:
$.post("ajax.php", { county: county }, function(result){
console.log(result); // response, if any
});

var county = "<?php echo $county; ?>";
$.ajax({
type: "POST",
url: "ajax.php",
data: {county:county},
success: function (data)
{
alert(data);
}
});
Please use this code it will work

Please give some detail what you exactly want to do
or the easiest way you can use ajax jQuery for plugin
$('#myForm').ajaxForm(function(response){
//Print response
$('#ResultDiv').html(response);
});

Related

jQuery update var settings.offset when page loads

Ok so I got this code from http://www.inserthtml.com/2013/01/scroll-pagination/ and it works like a charm, the only thing I am having issue setting the offset at initial page load of the site, I can get the PHP to get the correct first _id number but I can send it to the var settings.offset for some strange reason - am wondering how do I do this, I have this code linked via
(function($) {
$.fn.scrollPagination = function(options) {
var settings = {
nop : 10, // The number of posts per scroll to be loaded
offset : 0, // Initial offset, begins at 0 in this case
error : 'No More Posts!', // When the user reaches the end this is the message that is
// displayed. You can change this if you want.
delay : 500, // When you scroll down the posts will load after a delayed amount of time.
// This is mainly for usability concerns. You can alter this as you see fit
scroll : true // The main bit, if set to false posts will not load as the user scrolls.
// but will still load if the user clicks.
}
// Extend the options so they work with the plugin
if(options) {
$.extend(settings, options);
}
// For each so that we keep chainability.
return this.each(function() {
// Some variables
$this = $(this);
$settings = settings;
var offset = $settings.offset;
var busy = false; // Checks if the scroll action is happening
// so we don't run it multiple times
// Custom messages based on settings
if($settings.scroll == true) $initmessage = 'Scroll for more or click here';
else $initmessage = 'Click for more';
// Append custom messages and extra UI
$this.append('<div class="content"></div><div class="loading-bar">'+$initmessage+'</div>');
function getData() {
// Post data to ajax.php
$.post('ajax.php', {
action : 'scrollpagination',
number : $settings.nop,
offset : offset,
}, function(data) {
// Change loading bar content (it may have been altered)
$this.find('.loading-bar').html($initmessage);
// If there is no data returned, there are no more posts to be shown. Show error
if(data == "") {
$this.find('.loading-bar').html($settings.error);
}
else {
// Offset increases
offset = offset+$settings.nop;
// Append the data to the content div
$this.find('.content').append(data);
// No longer busy!
busy = false;
}
});
}
getData(); // Run function initially
// If scrolling is enabled
if($settings.scroll == true) {
// .. and the user is scrolling
$(window).scroll(function() {
// Check the user is at the bottom of the element
if($(window).scrollTop() + $(window).height() > $this.height() && !busy) {
// Now we are working, so busy is true
busy = true;
// Tell the user we're loading posts
$this.find('.loading-bar').html('Loading Posts');
// Run the function to fetch the data inside a delay
// This is useful if you have content in a footer you
// want the user to see.
setTimeout(function() {
getData();
}, $settings.delay);
}
});
}
// Also content can be loaded by clicking the loading bar/
$this.find('.loading-bar').click(function() {
if(busy == false) {
busy = true;
getData();
}
});
});
}
})(jQuery);
How do you initialize the function scrollPagination? I mean you should have something like:
$(function){ // On document ready
$('.container').scrollPagination()
});

Scroll Pagination working only with Older Version of jQuery

I'm Using this ScrollPagination Plugin in my Page and it works fine with older versions of jQuery (version 1.8.3) but when I add new jQuery, it doesn't works. Can't find out whats deprecated in this Plugin. I'm new with jQuery, Thanks in advance!!
(function($) {
$.fn.scrollPagination = function(options) {
var settings = {
nop : 10, // The number of posts per scroll to be loaded
offset : 0, // Initial offset, begins at 0 in this case
error : 'No More Feeds!', // When the user reaches the end this is the message that is
// displayed. You can change this if you want.
delay : 500, // When you scroll down the posts will load after a delayed amount of time.
// This is mainly for usability concerns. You can alter this as you see fit
scroll : true // The main bit, if set to false posts will not load as the user scrolls.
// but will still load if the user clicks.
}
// Extend the options so they work with the plugin
if(options) {
$.extend(settings, options);
}
// For each so that we keep chainability.
return this.each(function() {
// Some variables
$this = $(this);
$settings = settings;
var offset = $settings.offset;
var busy = false; // Checks if the scroll action is happening
// so we don't run it multiple times
// Custom messages based on settings
if($settings.scroll == true) $initmessage = 'Click for More';
else $initmessage = 'Click for more';
// Append custom messages and extra UI
$this.append('<div class="content"></div><div class="loading-bar">'+$initmessage+'</div>');
function getData() {
// Post data to ajax.php
$.post('ajax.php', {
action : 'scrollpagination',
number : $settings.nop,
offset : offset,
}, function(data) {
// Change loading bar content (it may have been altered)
$this.find('.loading-bar').html($initmessage);
// If there is no data returned, there are no more posts to be shown. Show error
if(data == "") {
$this.find('.loading-bar').html($settings.error);
}
else {
// Offset increases
offset = offset+$settings.nop;
// Append the data to the content div
$this.find('.content').append(data);
// No longer busy!
busy = false;
}
});
}
getData(); // Run function initially
// If scrolling is enabled
if($settings.scroll == true) {
// .. and the user is scrolling
$(window).scroll(function() {
// Check the user is at the bottom of the element
if($(window).scrollTop() + $(window).height() > $this.height() && !busy) {
// Now we are working, so busy is true
busy = true;
// Tell the user we're loading posts
$this.find('.loading-bar').html('Loading Feeds');
// Run the function to fetch the data inside a delay
// This is useful if you have content in a footer you
// want the user to see.
setTimeout(function() {
getData();
}, $settings.delay);
}
});
}
// Also content can be loaded by clicking the loading bar/
$this.find('.loading-bar').click(function() {
if(busy == false) {
busy = true;
getData();
}
});
});
}
})(jQuery);

Auto Scroll down and filters in php using javascript and ajax

I've a issue with integrating auto scroll down and filters in php which have the supporting languages javascript and ajax..
<script>
$(document).ready(function() {
$('#container2').scrollPagination({
nop : 12, // The number of posts per scroll to be loaded
offset : 0, // Initial offset, begins at 0 in this case
error : '', // When the user reaches the end this is the message that is
// displayed. You can change this if you want.
delay : 100, // When you scroll down the posts will load after a delayed amount of time.
// This is mainly for usability concerns. You can alter this as you see fit
scroll : true // The main bit, if set to false posts will not load as the user scrolls.
// but will still load if the user clicks.
});
});
</script>
the above javascript is included in file. with the following ajax arguments to the php file which takes category or category + sub category or default else part.
(function($) {
$.fn.scrollPagination = function(options) {
var settings = {
nop : 10, // The number of posts per scroll to be loaded
offset : 0, // Initial offset, begins at 0 in this case
error : '', // When the user reaches the end this is the message that is
// displayed. You can change this if you want.
delay : 500, // When you scroll down the posts will load after a delayed amount of time.
// This is mainly for usability concerns. You can alter this as you see fit
scroll : true // The main bit, if set to false posts will not load as the user scrolls.
// but will still load if the user clicks.
}
// Extend the options so they work with the plugin
if(options) {
$.extend(settings, options);
}
// For each so that we keep chainability.
return this.each(function() {
// Some variables
$this = $(this);
$settings = settings;
var offset = $settings.offset;
var busy = false; // Checks if the scroll action is happening
// so we don't run it multiple times
// Custom messages based on settings
if($settings.scroll == true) $initmessage = '';
else $initmessage = '';
// Append custom messages and extra UI
$this.append('<div class="content"></div><div class="loading-bar">'+$initmessage+'</div>');
function getData() {
// Post data to ajax.php
$.post('ajax.php', {
category :$('#category').val(),
category1:$('#category1').val(),
subcat:$('#subcat').val(),
area:$('#filter_area1').val(),
action : 'scrollpagination',
number : $settings.nop,
offset : offset,
}, function(data) {
// Change loading bar content (it may have been altered)
$this.find('.loading-bar').html($initmessage);
// If there is no data returned, there are no more posts to be shown. Show error
if(data == "") {
$this.find('.loading-bar').html($settings.error);
}
else {
// Offset increases
offset = offset+$settings.nop;
// Append the data to the content div
$this.find('.content').append(data);
// No longer busy!
busy = false;
}
});
}
getData(); // Run function initially
// If scrolling is enabled
if($settings.scroll == true) {
// .. and the user is scrolling
$(window).scroll(function() {
// Check the user is at the bottom of the element
if($(window).scrollTop() + $(window).height() > $this.height() && !busy) {
// Now we are working, so busy is true
busy = true;
// Tell the user we're loading posts
$this.find('.loading-bar').html('');
// Run the function to fetch the data inside a delay
// This is useful if you have content in a footer you
// want the user to see.
setTimeout(function() {
getData();
}, $settings.delay);
}
});
}
// Also content can be loaded by clicking the loading bar/
$this.find('.loading-bar').click(function() {
if(busy == false) {
busy = true;
getData();
}
});
});
}
})(jQuery);
Based on scroll down action it appends the data at the end. now i want to integrate this with filetering concept. I've one dropdown box, based on onchange function the data should change. Can anyone tell me how to pass arguments through ajax and change data based on filtering?? Am new to javascript and ajax..

Hide loading bar on no .HTML file found

I have the code below to find the next sequential page number and load it at the bottom of the page once the user hits the bottom of the screen.
the loading div slides down and as it is loading and up once it is done... it is set to "display:none" by default
What i need is a line of code in there which basically hides the #loading div if no more pages can be found to load... " var url = "page"+nextpage+".html";" finds the new page... titled 'page 2.html, page3.html' and so on.
Any help would be appreciated. I'm assuming it is easy but I can't find a solution anywhere...
alreadyloading = false;
nextpage = 2;
$(window).scroll(function() {
if($(window).scrollTop() + $(window).height() == $(document).height()) {
if (alreadyloading == false) {
$("#loading").slideDown();
var url = "page"+nextpage+".html";
alreadyloading = true;
$.post(url, function(data) {
$('#newcontent').children().last().after(data);
alreadyloading = false;
nextpage++;
$("#loading").slideUp();
});
}
}
});
If there is no such file then the AJAX request will fail, so you can do what you need from inside a "failure" handler. To be able to specify that, you one solution is to move from using $.post to using the more configurable $.ajax, which gives you all the necessary options:
$.ajax({
type: 'POST',
url: url,
success: function(data) {
$('#newcontent').children().last().after(data);
nextpage++;
},
complete: function() {
alreadyloading = false;
$("#loading").slideUp();
}
});
The complete callback contains code which will be executed no matter what happens with the request; the success callback will be executed before complete, but only if the request was successful.

Jquery too many ajax request fired

I have the following code build using jquery. When a user copies and pastes a a youtube url, i am suppose to extract the video id is the getVideoId(str) method in jquery. Using the id, i get the video image picture title and contents.
When the textbox->("#url") has a length more than 10, i will make a ajax request. Thus the ajax request is working. But now i have another problem. The very first time when the textbox has more than 10 characters, there is two ajax request being fired (tested using firebug). Than when the user enters more characters, there are many ajax request fired.
Thus this will slow down the process of the last ajax request. I just want to get the data of the youtube link and show a suggest where the user can add the title and content. It is like how the old facebook video video link is. Anyone has a better suggest in improving the codes?
jQuery(document).ready(
function(){
$("#url").keyup(function() {
var $t1 = $("#url").val();
var $length = $t1.length;
var $data;
$("#title").val($length);
$("#content").val($t1);
if($length==0){
alert('zero value');
return;
}
if($length>10){
$data = $.ajax({
url: '<?php echo $this->Html->url(array("action" => "retrieveVideoFeed"));?>',
dataType: "json",
data: {
vid: getVideoId($t1)
},
success: function(data) {
alert('success in getting data');
}
});
return;
}
});
function getVideoId(str) {
var urlRegex = /(http|https):\/\/(\w+:{0,1}\w*#)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%#!\-\/]))?/;
if (urlRegex.test(str) && str.indexOf('v=') != -1)
{
return str.split('v=')[1].substr(0, 11); // get 11-char youtube video id
} else if (str.length == 11) {
return str;
}
return null;
}
}
);
You could cache the calls and use blur event and not keyup: you are firing a lot of AJAX call because keyup() fires an event each time a key is pressed, you should use blur that fires an event when an input loses focus.
If you cache the calls in an object you can avoid a lot of repeated calls
var cacheUrl = {};
$("#url").blur(function() {
var $t1 = $("#url").val();
var $length = $t1.length;
var $data;
$("#title").val($length);
$("#content").val($t1);
if($length==0){
alert('zero value');
return;
}
if(cacheUrls[$t1] !== undefined && $length>10){
$data = $.ajax({
url: '<?php echo $this->Html->url(array("action" => "retrieveVideoFeed"));?>',
dataType: "json",
data: {
vid: getVideoId($t1)
},
success: function(data) {
//save the data to avoid a future call
cacheUrls[$t1] = data;
alert('success in getting data');
}
});
return;
}elseif ($length>10){
//you already have the data in cacheUrls[$t1]
}
});
EDIT if you want to use the submit key to start the search you could trigger the blur event when you press enter like this:
$("#url").keypress(function(e){
if(e.which == 13){
$(this).blur();
return false;
}
});
I think many ajax requests are fired because you are using $("#url").keyup(function()
so that for every key event in url input the particular funciton will exectue.So, as per i know better to use focusout method instead of keyup.
If you stay with the keyup-Event you maybe want to use an ajaxmanager-plugin for jQuery which can manage queues or limits the number of simultaneous requests.
$.manageAjax.create('myAjaxManager', {
queue: true,
cacheResponse: false,
maxRequests: 1,
queue: 'clear'
});
....
if($length>10){
$data = $.manageAjax.add({ ...
This will prevent having alot of ajaxrequests active at the same time when the user is typing. As soon as he stops the request will not aborted and the results will show up.

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