Im trying to make a 'Follow' button but the returned data, which is the 'Unfollow' button, is not working.
$('.follow_button').click(function() {
//event.preventDefault();
var visitor_user_id = $('.follow_button').attr('id');
$('#link_visitor_follow').empty().append('<div id = "follow_jquery_btn"><img src = "css/images/ajax_follow.gif" width = "12" height = "12" /> Follow</div>');
$.post('/unime/user_follow.php', {'type':'follow_me', visitor_user_id:visitor_user_id}, function(data){
if(data){
$('#link_visitor_follow').empty().html(data);
}
});
return false;
});
$('.unfollow_button').click(function() {
//event.preventDefault();
var visitor_user_id = $('.unfollow_button').attr('id');
$('#link_visitor_unfollow').empty().append('<div id = "follow_jquery_btn"><img src = "css/images/ajax_follow.gif" width = "12" height = "12" /> Following</div>');
$.post('/unime/user_follow.php', {'type':'unfollow_me', visitor_user_id:visitor_user_id}, function(data){
if(data){
$('#link_visitor_unfollow').empty().html(data);
}
});
return false;
});
PHP returned data:
echo "<a class = 'unfollow_button' id = 'visitor_".$visitor_user_id."'><span id = 'check_mark'></span> Unfollow</a>";
When I click the Unfollow button, it is not working, although I have the code setup for it. There is nothing wrong with the PHP itself. Its not even calling Ajax when I click Unfollow.
You can only bind to elements that currently exist. If they do not, you need to delegate to the element that WILL exist.
Change:
$('.unfollow_button').click(function() {
To:
$('#link_visitor_follow').on('click', '.unfollow_button', function() {
And it will delegate clicks to the not yet existent element, the event will bubble up from unfollow button until it hits link_visitor_follow, which has an event bound, and since it came from unfollow button it will now call the event (if that makes sense).
Also, you will need to do the same thing for the follow button in case they follow, unfollow, then follow again.
Dave answer should be enough for your question but if you are using jQuery below version 1.7, you can try these;
$('.unfollow_button').live('click', function() {
//your code here
})
Related
I'm trying when i submit a value to jqgrid box on multiple selected rows to Update the data of specific columns.My code is this but when i click OK in jqgrid nothing happens and function is not called :
jQuery(document).ready(function(){
jQuery('#list1').jqGrid('navButtonAdd', '#list1_pager',
{
'caption' : 'Resubmit',
'buttonicon' : 'ui-icon-pencil',
'onClickButton': function()
{
var str = prompt("Please enter data of Column")
var selr = jQuery('#list1').jqGrid('getGridParam','selarrrow');
$(selector).load('Updatestatus.php', {'string': str,'box[]' : selr })
},
'position': 'last'
});
});
The function that updates the column of the table:
function update_data($data)
{
// If bulk operation is requested, (default otherwise)
if ($data["params"]["bulk"] == "set-status")
{
$selected_ids = $data["cont_id"];
$str = $data["params"]["data"];
mysql_query("UPDATE out_$cmpname SET cont_status = '$str' WHERE cont_id IN ($selected_ids)");
die;
}
}
I'm new to jqgrid and Jquery.What can i do to call and execute this function when i click ok?
Thanks in advance!
You'll need a Ajax-call for this. I see you're using jQuery, have a look at http://api.jquery.com/load/
With this function, you can load PHP or HTML with jQuery to a certain element.
I am trying to update the content of a div with a $.get call but it is failing in ie(9).
the js is this
function UpdateElementOfParent(box_id, page_ref, template_ref)
{
$.get("get_content.php", { box_id: box_id, page_ref: page_ref, template_ref:template_ref } )
.done(function(data) {
$('#'+box_id).html(data);
});
}
and the get_content.php is this
<?php
include("connect.php");
$page_ref = $_GET['page_ref'];
$template_ref = $_GET['template_ref'];
$box_id = $_GET['box_id'];
$sql = mysql_query("SELECT * FROM site_content WHERE page_ref='$page_ref' AND template_ref='$template_ref' AND box_id='$box_id' AND box_type='text'");
while($row=mysql_fetch_array($sql))
{
echo stripslashes($row['content']);
}
?>
it works fine in firefox/chrome/safari and opera.
the php updates the db but the div ("#"+box_id) doesnt update in ie (only have ie9 at hand so dont know if its just 9 or other versions also)
any clues?
QUICK UPDATE
it seems that ie is holding some data from a previous $.get call in the cache. Basically I have a div on the screen and when the user clicks a button, a layer opens with a textarea that is editable with nicedit.
The textarea is populated with a $.get, then the user clicks save, the layer is hidden and the original div on the parent page is updated with the same $.get call.
In ie, if I change the content, the db is updated but the div is not and when I open the layer, it still shows the old data.
the first $.get call is this
$.get("get_content.php", { box_id: box_id, page_ref: page_ref, template_ref:template_ref } )
.done(function(data) {
document.getElementById("edit_content").value=data;
area1 = new nicEditor({fullPanel : true}).panelInstance("edit_content",{hasPanel : true});
});
the alerted data doesnt show the updated text in IE so its definately something to do with the $.get call
I figured out the problem. Nothing to do with the selector, but with the scope of the parameter variable box_id.
Change your function to:
function UpdateElementOfParent(box_id, page_ref, template_ref) {
myBox = box_id;
$.get("get_content.php", { box_id: box_id, page_ref: page_ref, template_ref:template_ref })
.done(function(data) {
$('#'+myBox).html(data);
});
}
Explanation:
The AJAX callback function does not have access to the local variable in UpdateElementOfParent
This isn't an answer, as the question is incomplete, but I need to post a code comment to assist OP.
As you mentioned that the PHP works just fine, the problem might be that IE doesn't like dynamic selectors in jQuery. Do try these few options:
1) Change $('#'+box_id).html(data); to:
var id = '#'+box_id;
$(id).html(data);
2) Try logging or alert-ing the element out, to see if IE actually got the element right:
var elem = $('#'+box_id);
alert(elem);
elem.html(data);
This would display as [HTMLDivElement] or something similar if the element is there.
3) If all else fails, see if this vanilla JS works in IE, to verify that it isn't a jQuery selector problem.
var elem = document.getElementById(box_id);
alert(elem);
elem.innerHTML = data;
ok problem solved and I knew it was something very obvious.
inside the original $.get function call I have to set the document.ready state
function get_edit_content(box_id,page_ref,template_ref)
{
$(document).ready(function() { <<<<<HERE
if(area1) {
area1.removeInstance('edit_content');
area1 = null;
document.getElementById("edit_content").value="";
}
$.get("get_content.php", { box_id: box_id, page_ref: page_ref, template_ref:template_ref } )
.done(function(data) {
document.getElementById("edit_content").value=data;
document.getElementById("page_ref").value=page_ref;
document.getElementById("template_ref").value=template_ref;
document.getElementById("box_id").value = box_id;
area1 = new nicEditor({fullPanel : true}).panelInstance("edit_content",{hasPanel : true});
});
});
}
thanks for all the input
I am submitting some data to my database then reloading the same page as the user was just on, I was wondering if there is a way to remember the scroll position the user was just on?
I realized that I had missed the important part of submitting, so, I decided to tweak the code to store the cookie on click event instead of the original way of storing it while scrolling.
Here's a jquery way of doing it:
jsfiddle ( Just add /show at the end of the url if you want to view it outside the frames )
Very importantly, you'll need the jquery cookie plugin.
jQuery:
// When document is ready...
$(document).ready(function() {
// If cookie is set, scroll to the position saved in the cookie.
if ( $.cookie("scroll") !== null ) {
$(document).scrollTop( $.cookie("scroll") );
}
// When a button is clicked...
$('#submit').on("click", function() {
// Set a cookie that holds the scroll position.
$.cookie("scroll", $(document).scrollTop() );
});
});
Here's still the code from the original answer:
jsfiddle
jQuery:
// When document is ready...
$(document).ready(function() {
// If cookie is set, scroll to the position saved in the cookie.
if ( $.cookie("scroll") !== null ) {
$(document).scrollTop( $.cookie("scroll") );
}
// When scrolling happens....
$(window).on("scroll", function() {
// Set a cookie that holds the scroll position.
$.cookie("scroll", $(document).scrollTop() );
});
});
#Cody's answer reminded me of something important.
I only made it to check and scroll to the position vertically.
(1) Solution 1:
First, get the scroll position by JavaScript when clicking the submit button.
Second, include this scroll position value in the data submitted to PHP page.
Third, PHP code should write back this value into generated HTML as a JS variable:
<script>
var Scroll_Pos = <?php echo $Scroll_Pos; ?>;
</script>
Fourth, use JS to scroll to position specified by the JS variable 'Scroll_Pos'
(2) Solution 2:
Save the position in cookie, then use JS to scroll to the saved position when page reloaded.
Store the position in an hidden field.
<form id="myform">
<!--Bunch of inputs-->
</form>
than with jQuery store the scrollTop and scrollLeft
$("form#myform").submit(function(){
$(this).append("<input type='hidden' name='scrollTop' value='"+$(document).scrollTop()+"'>");
$(this).append("<input type='hidden' name='scrollLeft' value='"+$(document).scrollLeft()+"'>");
});
Than on next reload do a redirect or print them with PHP
$(document).ready(function(){
<?php
if(isset($_REQUEST["scrollTop"]) && isset($_REQUEST["scrollLeft"]))
echo "window.scrollTo(".$_REQUEST["scrollLeft"].",".$_REQUEST["scrollTop"].")";
?>
});
Well, if you use _targets in your code you can save that.
Or, you can do an ajax request to get the window.height.
document.body.offsetHeight;
Then drop them back, give the variable to javascript and move the page for them.
To Remember Scroll all pages Use this code
$(document).ready(function (e) {
let UrlsObj = localStorage.getItem('rememberScroll');
let ParseUrlsObj = JSON.parse(UrlsObj);
let windowUrl = window.location.href;
if (ParseUrlsObj == null) {
return false;
}
ParseUrlsObj.forEach(function (el) {
if (el.url === windowUrl) {
let getPos = el.scroll;
$(window).scrollTop(getPos);
}
});
});
function RememberScrollPage(scrollPos) {
let UrlsObj = localStorage.getItem('rememberScroll');
let urlsArr = JSON.parse(UrlsObj);
if (urlsArr == null) {
urlsArr = [];
}
if (urlsArr.length == 0) {
urlsArr = [];
}
let urlWindow = window.location.href;
let urlScroll = scrollPos;
let urlObj = {url: urlWindow, scroll: scrollPos};
let matchedUrl = false;
let matchedIndex = 0;
if (urlsArr.length != 0) {
urlsArr.forEach(function (el, index) {
if (el.url === urlWindow) {
matchedUrl = true;
matchedIndex = index;
}
});
if (matchedUrl === true) {
urlsArr[matchedIndex].scroll = urlScroll;
} else {
urlsArr.push(urlObj);
}
} else {
urlsArr.push(urlObj);
}
localStorage.setItem('rememberScroll', JSON.stringify(urlsArr));
}
$(window).scroll(function (event) {
let topScroll = $(window).scrollTop();
console.log('Scrolling', topScroll);
RememberScrollPage(topScroll);
});
I had major problems with cookie javascript libraries, most cookie libraries could not load fast enough before i needed to scroll in the onload event. so I went for the modern html5 browser way of handling this. it stores the last scroll position in the client web browser itself, and then on reload of the page reads the setting from the browser back to the last scroll position.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
if (localStorage.getItem("my_app_name_here-quote-scroll") != null) {
$(window).scrollTop(localStorage.getItem("my_app_name_here-quote-scroll"));
}
$(window).on("scroll", function() {
localStorage.setItem("my_app_name_here-quote-scroll", $(window).scrollTop());
});
});
</script>
I tackle this via using window.pageYOffset . I saved value using event listener or you can directly call window.pageYOffset. In my case I required listener so it is something like this:
window.addEventListener('scroll', function() {
document.getElementById('showScroll').innerHTML = window.pageYOffset + 'px';
})
And I save latest scroll position in localstorage. So when next time user comes I just check if any scroll value available via localstorage if yes then scroll via window.scrollTo(0,myScrollPos)
sessionStorage.setItem("VScroll", $(document).scrollTop());
var scroll_y = sessionStorage.getItem("VScroll");
setTimeout(function() {
$(document).scrollTop(scroll_y);
}, 300);
I have several divs that a user can Minimize or Expand using the jquery toggle mothod. However, when the page is refreshed the Divs go back to their default state. Is their a way to have browser remember the last state of the div?
For example, if I expand a div with an ID of "my_div", then click on something else on the page, then come back to the original page, I want "my_div" to remain expanded.
I was thinking it would be possible to use session variables for this, perhaps when the user clicks on the expand/minimize button a AJAX request can be sent and toggle a session variable...IDK..any ideas?
There's no need for an ajax request, just store the information in a cookie or in the localstorage.
Here's a library which should help you out: http://www.jstorage.info/
Some sample code (untested):
// stores the toggled position
$('#my_div').click(function() {
$('#my_div').toggle();
$.jStorage.set('my_div', $('#my_div:visible').length);
});
// on page load restores all elements to old position
$(function() {
var elems = $.jStorage.index();
for (var i = 0, l = elems.length; i < l; i++) {
$.jStorage.get(i) ? $('#' + i).show() : hide();
}
});
If you don't need to support old browsers, you can use html5 web storage.
You can do things like this (example taken from w3schools):
The following example counts the number of times a user has visited a
page, in the current session:
<script type="text/javascript">
if (sessionStorage.pagecount) {
sessionStorage.pagecount=Number(sessionStorage.pagecount) +1;
}
else {
sessionStorage.pagecount=1;
}
document.write("Visits "+sessionStorage.pagecount+" time(s) this session.");
</script>
Others have already given valid answers related to cookies and the local storage API, but based on your comment on the question, here's how you would attach a click event handler to a link:
$("#someLinkId").click(function() {
$.post("somewhere.php", function() {
//Done!
});
});
The event handler function will run whenever the element it is attached to is clicked. Inside the event handler, you can run whatever code you like. In this example, a POST request is fired to somewhere.php.
I had something like this and I used cookies based on which user logged in
if you want only the main div don't use the
$('#'+div_id).next().css('display','none');
use
$('#'+div_id).css('display','none');
*Here is the code *
//this is the div
<div id = "<?php echo $user; ?>1" onclick="setCookie(this.id)" ><div>My Content this will hide/show</div></div>
function setCookie(div_id)
{
var value = '';
var x = document.getElementById(div_id);
var x = $('#'+div_id).next().css('display');
if(x == 'none')
{
value = 'block';
}
else
{
value = 'none';
}
console.log(div_id+"="+value+"; expires=15/02/2012 00:00:00;path=/")
//alert(x);
document.cookie = div_id+"="+value+"; expires=15/02/2012 00:00:00;path=/";
}
function getCookie(div_id)
{
console.log( div_id );
var i,x,y,ARRcookies=document.cookie.split(";");
for (i=0;i<ARRcookies.length;i++)
{
x=ARRcookies[i].substr(0,ARRcookies[i].indexOf("="));
y=ARRcookies[i].substr(ARRcookies[i].indexOf("=")+1);
x=x.replace(/^\s+|\s+$/g,"");
if (x==div_id)
{
return unescape(y);
}
}
}
function set_status()
{
var div_id = '';
for(var i = 1; i <= 9 ; i++)
{
div_id = '<?php echo $user; ?>'+i;
if(getCookie(div_id) == 'none')
{
$('#'+div_id).next().css('display','none');
}
else if(getCookie(div_id) == 'block')
{
$('#'+div_id).next().slideDown();
}
}
}
$(document).ready(function(){
get_status();
});
Look about the JavaScript Cookie Method, you can save the current states of the divs, and restore it if the User comes back on the Site.
There is a nice jQuery Plugin for handling Cookies (http://plugins.jquery.com/project/Cookie)
Hope it helps
Ended up using this. Great Tutorial.
http://www.shopdev.co.uk/blog/cookies-with-jquery-designing-collapsible-layouts/
I am working with AJAX with prototype and PHP. It is working for me but I need some small changes. Following is my running code for AJAX request:
JS/Prototype:
function ajaxRequest(url) {
new Ajax.Request( url, {
method: 'get',
onSuccess: function( transport ) {
// get json response
var json = transport.responseText.evalJSON( true );
alert(json);
},
onFailure: function() {
alert('Error with AJAX request.');
}
});
return false;
}
HTML:
<a href='javascript:ajaxRequest("/testajax/ajaxresponse");'>Testing AJAX</a>
Question:
Now I want to change my link like this:
<a href='/testajax/ajaxresponse' class='AjaxLink'>Testing AJAX</a>
So prototype function should capture click event of class='AjaxLink' links and then get href part of clicked link and proceed. How can I change my above prototype function for such kind of links.
Thanks
If you have Prototype 1.7 then this way is available:
document.on('click', 'a.AjaxLink', ajaxRequest.curry('/testajax/ajaxresponse'));
Otherwise you'll have to rely on good old Event.observe:
$$('a.AjaxLink').invoke('observe', 'click',
ajaxRequest.curry('/testajax/ajaxresponse'));
Just re-read the question and I see you want to use the href attribute. Jan Pfiefer was very close.
document.on('click', 'a.AjaxLink', function(event, element) {
return ajaxRequest(element.href);
});
This wont work. Why do you want such a link? If a link is specified in this way any click on it will follow its href and change location of actual document. Only way to prevent such a behavior then is by adding onclick again or in $(document).ready bind onclick handler, and manualy cancel the event.
UPDATE
However to bind onclick event on all links with AjaxLink class,execute request and cancel the event:
$(document).ready(function(){
$('.AjaxLink').click(
function(e){
ajaxRequest(this.href);
event.preventDefault ? event.preventDefault() : event.returnValue = false;
}
);
});
This will work:
$$('a.AjaxLink').each(function(element) {
element.observe('click', function(e) {
var element = e.element()
Event.stop(e)
alert(element.href)
});
})