changing jquery live to on pagination - javascript

I have a pagination page based on dropdown list and on change loaded as
$("select#opt-category").change(function () {
$(".showgrid").load('portal.php?category='+category);
});
in portal.php(which is also post as ajax to pagination.php
if(isset($_GET['category'])) $catgory=$_GET['category'];
<script type="text/javascript">
function loading_show(){
$('#loading').html("<img src='assets/img/ajax-loader.gif'/>").fadeIn('slow');
}
function loading_hide(){
$('#loading').fadeOut('slow');
}
function loadData(page,category){
loading_show();
$.ajax
({
type: "POST",
url: "pagination_data.php",
data: {'page':page,'category':category},
success: function(msg)
{
$("#container").ajaxComplete(function(event, request, settings)
{
loading_hide();
$("#container").html(msg);
});
}
});
}
loadData(1,<?php echo $catgory?> )
// For first time page load default results
$('#container .pagination li.active').live('click',function(){
event.stopPropagation();
var page = $(this).attr('p');
var category= $(this).attr('q');
loadData(page,category);
//break;
});
$('#go_btn').live('click',function(){
var page = parseInt($('.goto').val());
var category = parseInt($('.total').attr('b'));
var no_of_pages = parseInt($('.total').attr('a'));
if(page != 0 && page <= no_of_pages){
loadData(page,category);
}else{
alert('Enter a PAGE between 1 and '+no_of_pages);
//$('.goto').val("").focus();
return false;
}
});
</script>
It shows all the pagination correctly but clicking on pages fire multiple Ajax call to pagination_data.php and how do i change to .on()
thanx

Use the element closest to the button, which is not loaded dynamically (document in extreme cases). Then attach the handler on it, and use the button's selector (the id in your case) as the selector for the delegated event.
Assuming your #container is that static element:
$('#container').on('click', '.pagination li.active', function(){…});
$('#container').on('click', '#go_btn', function(){…});

Related

how to refresh only div with id=calender?

$(document).ready(function() {
$("#client-list").on("change", function() {
var selectedValue = $(this).val();
location.reload();
});
});
how to refresh only div with id='calender', instead of refreshing complete page, onchange dropdown list option? Complete source i have created a fiddle or how to keep slected option in drop down which was selected and refresh rest of the page?
You cannot reload only a part of your page unless you use IFRAMES.
Instead, you'll have to use AJAX. Here is a quick example:
<script>
function refreshCalendar()
{
$.ajax({
type: "GET",
url: 'http://yourdomain/api/whatever',
data: "", // You can send some data to the servers
success: function(data) {
$('#calendar').html(data);
}
});
}
</script>
You can refresh fullCalender as like this.
Put you calendar code in a function LoadCalendar then call it once on document ready and once on change of dropdown.
function LoadCalendar() {
$('#calendar').fullCalendar({
//your options
});
}
$(function(){
LoadCalendar();
$("#client-list").on("change", function() {
var selectedValue = $(this).val();
LoadCalendar();
});
});

Ajax call only passing id of the first element

I am outputting multiple dynamic links which use the same < a >. My AJAX call loads the content fine of all the links fine. But the new div which displays the ajax content only outputs id of the first link when other links are clicked. I am using this to see the id in the console console.log($('[data-taskid]').first().attr('data-id')); how can i pass the id of the link clicked to my ajax view? Thanks guys!
<div id="content"></div>
PHP
$string .= '<a class="hrefid" data-id="'.$name["id"].'" href="#link">'.$name["name"].'</a>'.
Jquery
$('.hrefid').on('click', function (e) {
var load = $(e.target).attr("href");
if(load == "#link") {
$.ajax({
type: 'post',
url: "/page/test/"+$(this).parents("[data-id]").attr("data-id"),
complete: function (event) {
$("#content").contents().remove();
$("#content").append(event.responseText);
}
});
}
});
Please review that I didn't use $(this) as reference , $(this) reference get chnaged once you use $(this) in ajax , it refers to ajax not main selector.
$('.hrefid').on('click', function (e) {
var $this = $(this);
var load = $this.attr("href");
if(load == "#link") {
$.ajax({
type: 'post',
url: "/page/test/"+ $this.attr("data-id"),
complete: function (event) {
$("#content").contents().remove();
$("#content").append(event.responseText);
}
});
}
});

javascript/jquery doesn't work in ajax

I have php page "Home.php", that present user posts(using ajax).
This is how I get the posts:
<script type="text/javascript">
function loadmore()
{
var val = document.getElementById("result_no").value;
var userval = document.getElementById("user_id").value;
$.ajax({
type: 'post',
url: 'fetch.php',
data: {
getresult:val,
getuserid:userval
},
success: function (response) {
var content = document.getElementById("result_para");
content.innerHTML = content.innerHTML+response;
// We increase the value by 2 because we limit the results by 2
document.getElementById("result_no").value = Number(val)+10;
}
});
}
</script>
<div id="content">
<div id="result_para">
</div>
</div>
In every post, there is a like button(which also uses ajax). This is how I save the likes:
<script type="text/javascript">
function likethis(likepostid)
{
$.ajax({
type: 'post',
url: 'fetchlikes.php',
data: {
getpostid:likepostid
},
success: function (response) {
}
});
}
</script>
Before I used ajax to present posts, all worked well. But now when I press the like button, it DOES save the like, BUT the javascript/jquery doesn't work. I tried to make alert when I pressed the LIKE button, but it didn't work.
This is the index.js code(the javascript). It add +1 likes, when the user press the button:
$('.btn-counter_likecount').on('click', function(event, count) {
event.preventDefault();
//alert("hello");
var $this = $(this),
count = $this.attr('data-count'),
active = $this.hasClass('active'),
multiple = $this.hasClass('multiple-count_likecount');
$.fn.noop = $.noop;
$this.attr('data-count', ! active || multiple ? ++count : --count )[multiple ? 'noop' : 'toggleClass']('active');
});
EDIT fetchlikes.php:
<?php
mysql_connect('localhost','root','');
mysql_select_db('blabla');
$postid=$_POST['getpostid'];
mysql_query("UPDATE user_post SET likes_count=likes_count+1 WHERE post_id='$postid'");
?>
Because your posts are being loaded dynamically, the javascript where you bind the event is running before the posts are actually loaded, thus the buttons don't exist when you try to bind the event. You can use delegated events in jQuery to handle this.
Your previous code
$('.btn-counter_likecount').on('click', function(event, count) {
....
});
New Code
$('#result-para').on('click','.btn-counter_likecount',function(event, count) {
....
}
This way the event will actually be bound to a parent element that already exists when jQuery's ready() function runs. This way, the event handler checks for matching elements when the event is fired rather than when the event is bound.
For further reading, look into jQuery's delegated events

jQuery .on not working after ajax delete and div refresh

On a page with a tab control, each tab contains a table, each tr contains a td with a button which has a value assigned to it.
<td>
<button type="button" class="btn" name="deleteEventBtn" value="1">Delete</button>
</td>
This code below works for the first delete. After the AJAX call & the refresh of the div, no further delete buttons can be clicked. The .on is attached to the document. The same happens if I attach it to the body or anything closer to the buttons.
function deleteRecord(url, id, container) {
$.ajax({
type: "POST",
url: url,
data: { id: id },
success: function (data) {
$('#delete-popup').hide();
$(container).trigger('refresh');
}
});
}
$(document).ready(function () {
$(document).on('click', '[name^="delete"]', function (e) {
e.preventDefault();
var id = $(this).val();
$('#current-record-id').val(id);
$('#delete-popup').modal('show');
});
$('#delete-btn-yes').on('click', function (e) {
e.preventDefault();
var recordId = $('#current-record-id').val();
var recordType = location.hash;
switch (recordType) {
case "#personList":
deleteRecord(url, recordId, recordType);
break;
}
});
});
Any ideas? Could it be related to the wildcard for starts with [name^="delete"]? There are no other elements where the name starts with 'delete'.
EDIT
When replacing
$(container).trigger('refresh');
with
location.reload();
it "works", however that refreshes the whole page, loses the users position and defeats the point of using AJAX.
As the button click is firing at first attempt, there is no issue in that code. All you have to do is, put the button click event in a method and call it after the refresh. This way, the events will be attached to the element again. See the code below,
function deleteRecord(url, id, container) {
$.ajax({
type: "POST",
url: url,
data: { id: id },
success: function (data) {
$('#delete-popup').hide();
$(container).trigger('refresh');
BindEvents();
}
});
}
$(document).ready(function () {
BindEvents();
});
function BindEvents()
{
$(document).on('click', '[name^="delete"]', function (e) {
e.preventDefault();
var id = $(this).val();
$('#current-record-id').val(id);
$('#delete-popup').modal('show');
});
$('#delete-btn-yes').on('click', function (e) {
e.preventDefault();
var recordId = $('#current-record-id').val();
var recordType = location.hash;
switch (recordType) {
case "#personList":
deleteRecord(url, recordId, recordType);
break;
});
}
Apologies to all and thanks for your answers. The problem was due to the way the popup was being shown & hidden.
$('#delete-popup').modal('show');
and
$('#delete-popup').hide();
When I changed this line to:
$('#delete-popup').modal('hide');
it worked. Thanks to LShetty, the alert (in the right place) did help!
If you are using Bootstrap Modal
After Ajax Request before Refreshing page add
$('.modal').modal('hide');
This Line will Close your Modal and reload your page. Before that it will complete all Ajax Request things.
But for google chrome there is no issues :) hope this help someone.

Creating ajax pagination

I am trying to do an ajax pagination with the following code:
// AJAX pagination
$(".pages .prev").live('click', function(event) {
event.preventDefault()
var current_page = parseInt(getParameterByName('page'))-1;
$.get('/ajax/financial_page/', {'page': current_page}, function(response) {
$(".content table").replaceWith(response)
});
})
And in my view function:
def financial_page(request):
"""
Returns a single financials page, without extra HTML (used in AJAX calls).
"""
page = int(request.GET.get('page', 1))
if request.user.is_superuser:
fs = FinancialStatements.objects.order_by('-date', 'statement_id')
else:
up = request.user.get_profile()
providers = up.provider.all()
fs = FinancialStatements.objects.filter(provider__in=providers).order_by('-date', 'statement_id')
fs_objects, current_page_object, page_range = paginator(request, objects=fs, page=page, number_per_page=30)
data = { 'fs':fs_objects,
'page_range': page_range,
'current_page': current_page_object,
}
page = render_to_string('financial_section.html', data, RequestContext(request))
return HttpResponse(simplejson.dumps([page]))
However, there are two problems I'm running into. The first is that the response is not really HTML, and has a bunch of n\t\t\n\t\t\n\t\n\t\n\t\n\t\t\n\t\, etc. Also, I'm having trouble keeping track of the current page/changing the url as needed. How would I build a functional ajax pagination here?
Update: I figured out the first one, by doing response = $.parseJSON(response);. How would I keep track of which page I am on though?
To keep track of the page, you can increment/decrement a variable on click with your AJAX function. Try this:
var counter="0";
$(document.body).on('click', ".pages .prev, .pages .next", function(event) {
if($(this).hasClass('prev')
counter--;// <--decrement for clicking previous button
else if($(this).hasClass('next')
counter++; // <--increment for clicking next button
event.preventDefault()
$.get('/ajax/financial_page/', {'page': counter}, function(response) {
$(".content table").replaceWith(response)
});
})
I would also not use live method as it is deprecated as of jQuery 1.7. It has been replace by the on method. See the jQuery on() API here: http://api.jquery.com/on/
Check this tutorial about "Ajax Scroll Paging Using jQuery, PHP and MySQL", it may simplify your job:
http://www.bewebdeveloper.com/tutorial-about-ajax-scroll-paging-using-jquery-php-and-mysql
Here is the essential from:
var is_loading = false; // initialize is_loading by false to accept new loading
var limit = 4; // limit items per page
$(function() {
$(window).scroll(function() {
if($(window).scrollTop() + $(window).height() == $(document).height()) {
if (is_loading == false) { // stop loading many times for the same page
// set is_loading to true to refuse new loading
is_loading = true;
// display the waiting loader
$('#loader').show();
// execute an ajax query to load more statments
$.ajax({
url: 'load_more.php',
type: 'POST',
data: {last_id:last_id, limit:limit},
success:function(data){
// now we have the response, so hide the loader
$('#loader').hide();
// append: add the new statments to the existing data
$('#items').append(data);
// set is_loading to false to accept new loading
is_loading = false;
}
});
}
}
});
});
Try using the javascript String.replace() method:
// AJAX pagination
$(".pages .prev").live('click', function(event) {
event.preventDefault()
var current_page = parseInt(getParameterByName('page'))-1;
$.post('/ajax/financial_page/', {'page': current_page}, function(response) {
response = response.replace(/\n/g,'<br>').replace(/\t/,' ');
$(".content table").replaceWith(response)
});
})
jQuery.get(url, [data], [callback], [type])
type :xml, html, script, json, text, _default。
how about trying to define the last parameter as "html" ?

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