I have a php page where I add and delete items from database using Jquery + PHP + AJAX.
Now I am able to delete and add when that page loads for the first time.
Now if I first add an element; which in turn adds record to the DB and then updates the div that contains all the listing of divs.
Example:
<div id="all_items">
<div id= "item_1">
<a id="delete_link">...</a>
</div>
<div id= "item_2">
<a id="delete_link">...</a>
</div>
.... Upto Item n
</div>
Now I replace the div with id all_items.
Now I have jQuery at the bottom of the page which calls ajax on a tag of delete_link.
Situtation is:
When page is loaded I can delete any item from the list.
But if I page load i add new item first. (which will update all_items div) after that if I try to click on delete link. Jquery on click selector event is not fired and which in turn doesn't do delete ajax operation.
I couldn't figure out why this is happening.
Looking for some help here.
EDITED:
Sorry for not writing code earliar.
Following is the jQuery I am talking about.
<script type="text/javascript" >
var jQ = jQuery.noConflict();
jQ(function() {
jQ("#submit_store").click(function() {
var store_name = jQ("#store_name").val();
var dataString = 'store_name='+ store_name;
dataString += '&mode=insert';
if(store_name =='')
{
alert("Please Enter store Name");
}
else {
jQ.ajax({
type: "POST",
url: "<?php echo $mycom_url; ?>/store_insert.php",
data: dataString,
cache: false,
success: function(html){
jQ("#dvstoreslists").html(html);
document.getElementById('store_name').value='';
document.getElementById('store_name').focus();
}
});
}
return false;
});
jQ(".store_delete").click(function() {
var store_id = jQ(this).attr('id');
var id = store_id.split("_");
var dataString = 'store_id='+ id[2];
dataString += '&mode=delete';
var to_delete = "#store_list_" + id[2]
jQ.ajax({
type: "POST",
url: "<?php echo $mycom_url; ?>/store_insert.php",
data: dataString,
cache: false,
success: function(html){
jQ(to_delete).hide("slow");
}
});
return false;
});
});
</script>
So If on page load, I delete then delete on click jquery event is fired. But after adding new store and replacing div of stores with new div. then jQuery on click event is not fired.
My HTML is as below.
<div class="sbBox stores">
<form id="add_storefrm" name="add_storefrm" method="post" action="" >
<div class="dvAddStore">
<div class="dvName" id="store_list">
<input type="text" id="store_name" name="store_name">
<input type="hidden" value="addstore" id="mode" name="mode">
</div>
<div class="btnAddStore">
<input type="submit" name="submit_store" value="Add Store" id="submit_store">
</div>
</div>
<div id="dvstoreslists">
<?php
$query = "SELECT * FROM #__shoppingstore order by store_id desc;";
$db->setQuery($query);
$rows = $db->loadObjectList();
foreach($rows as $row)
{
echo "<div class=dvlist id=store_list_".$row->store_id ."><div class=dvStoreListLeft>";
echo "<div class='slname'><h3>" . $row->store_name . "</h3></div>";
?>
<div class="slDelBtn">
<p id = "p_store_<?php echo $row->store_id ; ?>">
<a id="store_delete_<?php echo $row->store_id ; ?>" class="store_delete" alt="Delete" onclick="DeleteStore(<?php echo $row->store_id ; ?>);" >
</a>
</p>
</div>
</div>
</div>
<?php } ?>
</div>
</form>
</div>
Sorry folks for not posting the code earliar.
the ID should always be unique so use class instead
in your case : <a id="delete_link">...</a> to <a class="delete_link">...</a>
When you replace the contents of #all_items any event handlers that were bound to any descendants will no longer exist. You can use event delegation, using the on method, to solve this:
$("#all_items").on("click", ".delete_link", function() {
//Do stuff
});
Notice that I'm using a class selector (.delete_link) instead of an ID selector for the links. It's invalid to have duplicate IDs in the same document.
Also note that the above will only work if you are using jQuery 1.7 or above. For older versions, use delegate instead:
$("#all_items").on(".delete_link", "click", function() {
//Do stuff
});
This works because DOM events bubble up the tree from their target. So a click on a link which is a descendant of #all_items will bubble up through all of its ancestors and can be captured when it reached #all_items.
use live() instead of .bind()
It seems you are trying to delete dynamically added delete_link so i think you should use
$('id or class').on(click,function(){});
Related
I have two divs, and when one is clicked it empties the div. I want to be able to load data into that div once it's been emptied. I've got it so it loads in both, but I only want to load data into the div that's been emptied.
HTML (I have two of these)
<div class="fl person">
<div class="maintain_size">
<input type="hidden" name="userSaved" value="<?php echo $user_one['id']; ?>" />
<img src="<?php echo "http://graph.facebook.com/".$user_one['id']."/picture?type=large"; ?>" class="circle-mask" />
<img class="hoverimage" src="images/fire_extinguisher.png" />
<div class="meta_data">
<h2><?php echo $user_one['name']; ?></h2>
</div>
</div>
</div>
Javascript
<script>
$("div.person img").click(function () {
$(this).parent("div").fadeOut(1000, function () {
var saved_id_user_who_voted_val = "<?php echo $_SESSION['id']; ?>";
var saved_id_user_voted_on_val = $(this).parent('div').find('input:hidden');
var saved_id_user_voted_on_val = saved_id_user_voted_on_val.val();
$(this).parent("div").empty();
// Load in new data
var current_div = $(this).parent("div");
$.get('loadNewUser.php', function(data) {
current_div.html(data);
});
});
});
</script>
The data seems to come through fine if I select a div that's not the current one, or I just use an alert to see if the data is there--which it is, but if I try load the data into the current div it just doesn't work. Any ideas? Thanks.
The code that I think is wrong:
$.get('loadNewUser.php', function(data) {
current_div.html(data);
});
Edit: The div I'm trying to get the data into is: div.person - although, there are 2 of these.
Once you empty the div your 'this' is no longer there. Try just declaring var current_div before you empty.
var current_div = $(this).parent("div");
current_div.empty();
$.get('loadNewUser.php', function(data) {
current_div.html(data);
});
See fiddle
You need to delegate the event as you are replacing old content with new one
$(document.body).on('click',"div.person img",function () {
Use live() function
Example
$("div.person img").live("click",function () {
//Your code goes here
});
Basically I have a list of files composed from a foreach loop that all have the same code except for the name, which carries the file_id for each file. My problem is that when I added an on-click pop-up event I lose the ability to fetch the current $(".flag") attribute name. Is there a way that I can pass it along the way so I can use it in the end?
PHP: (the user sees the link which they can click...remember there are several of these as a result from the foreach loop. I'm showing one for example)
echo "<td><a href='#' class='flag' name='$files[id]' >Click Here</a> ( $files[nums] )</td>";
jQuery: (on-click this will happen)
$(".flag").live('click', function() {
$(".pop").show("slow");
return false;
});
HTML: this div will popup
<div class="pop">
<form method="post" id="new_folder" >
<p><label for="folder">Reason for Reporting?</label><textarea id="report_reason" name="report_reason" maxlenght="100" style="resize:none" cols="30" rows="5">Please limit your response to 100 characters.</textarea></p>
<p><input type="submit" value="Submit" id="message_submit"/> or <a class="close" href="/">Cancel</a></p>
</form>
</div>
jQuery: on submit I need to send the current $files['id'] and textarea value via ajax. The textarea sends the correct data, but the $(".flag") instead of being the id of the selected link it is the id of the first fetched id from the foreach loop
$("#message_submit").on("click", function(e){
var fileID = $(".flag").attr("name");
var text = $("#report_reason").val();
$(".pop").hide("slow");
$.ajax({
url: '<?php echo base_url().'home/report_file';?>',
type: 'POST',
data: { val: fileID, val2: text },
dataType: 'json',
success: function(output_string){
$(".success").text("You have flagged this file!!").show().css({"color" : "green", "margin-top" : "10px"});
$(".success").fadeOut(10000);
}
});
return false;
});
You can save the .flag link being clicked and later use it.
var flagClicked;
$(".flag").live('click', function() {
$(".pop").show("slow");
flagClicked = $(this);
return false;
});
$("#message_submit").on("click", function(e){
var fileID = flagClicked.attr("name");
....
I have buttons and divs and in each part I have them with the same ID I want to get the ID of button and use it for refreshing the div html.how should I write the * section?
$(function() {
$(".button").click(function(){
var id=$(this).attr('id');
var dataString = 'id='+ id ;
$.ajax({
type: "POST",
url: "download_number.php",
data: dataString,
cache: false,
success: function(html)
{
*********I HAVE PROBLEM HERE**************
$('how to get the id of the div from var id of button above?').html(html);
}
});
});
});
Div:
Downloaded:<div id="<?php echo $id; ?>" ><?php echo $downloadcount;?></div>
Button:
<input type = "button" value="Download" class="button" id="<?php echo $id; ?>" name="dl">
If I get class It will update the whole divs I want to update just the div realted to the button
You cannot have the same id on both the button and the div, id values must be unique in a document.
What I'd probably do is put the div's id on the button as a data-divid attribute (all attributes with the prefix data- are valid on all elements as of HTML5, and harmless in earlier versions of HTML), like this:
<input type="button" value="Download" class="button" data-divid="<?php echo $id; ?>" name="dl">
Then change
var id=$(this).attr('id');
to
var id=$(this).attr('data-divid');
...and then use that id var in your success callback (as the callback is a closure created within the context where id is defined, and so the callback has access to id).
Here's a simple example: Live copy | source
HTML:
<div id="div1">This is div1</div>
<div id="div2">This is div2</div>
<div>
<input type="button" data-divid="div1" value="Update div1">
<input type="button" data-divid="div2" value="Update div2">
</div>
JavaScript:
jQuery(function($) {
$("input[type=button]").click(function() {
var id = $(this).attr("data-divid");
// I'll use setTimeout to emulate doing an ajax call
setTimeout(function() {
// This is your 'success' function
$("#" + id).html("Updated at " + new Date());
}, 10);
return false;
});
});
Use the id but prefix them then build the name up...
<div id="div_<?php echo $id; ?>" ><?php echo $downloadcount;?></div>
button:
<input type = "button" value="Download" class="button" id="<?php echo $id; ?>" name="dl">
Then in you're code you have the id used in the buttons already (and also it will be div_), so you can then in you're 'success' just do:
$("#div_"+id).html(html);
change your html to this:
Downloaded:<div id="<?php echo $id; ?>" class="downloaded" ><?php echo $downloadcount;?></div>
then do something like:
var element_id = $(".downloaded").prop("id");
if(element_id = this.id){
$("#"+element_id).html(/* ... */);
}
$(function() {
$(".button").click(function(){
var id=$(this).attr('id');
var dataString = 'id='+ id ;
$.ajax({
type: "POST",
url: "download_number.php",
data: dataString,
cache: false,
success: function(html)
{
$('.count-' + id).html(html); // for class
}
});
});
});
<div class="count-<?php echo $id; ?>" ><?php echo $downloadcount;?></div>
First of all avoid using same IDS.
Then you can use CSS selectors:
$('div.class') //div
$('input[type="button"].youridclass')
You cannot use the id attribute for that purpose, the id cannot be a number (valid html) and thereby id's needs to be unique. Use the data attrib instead.
Try something like:
$('.button').attr('id');
to get the id of the button, then to change it:
$('.button').attr('id',''); //delete previous id if existing
$('.button').attr('id','yourNewId'); //set new id
then to use the new id:
$("#yourNewId").doSomething();
First and foremost, ids should be unique, you'll run into problems, particularly when using jQuery, if you have elements with the same id.
Without seeing your markup it's hard to give you a working example. But you can get the id of the div which corresponds to the clicked button by traversing the DOM.
Example markup:
<div id="example-div">
<input type="button" value="Example" />
</div>
jquery
$('input[type="button"]').click(function() {
console.log($(this).parent('div').prop('id'));
});
// outputs 'example-div'
for your reference check the below link for the various ways that you can use to select the dom elements given the parent element.
jsperf.com/jquery-selectors-context/2
I'm still searching solution for getting values from dynamic created object.
Follwing code generates dynamic object from zip2.php
$(document).ready(function() {
$("#submit").click(function(e) {
e.preventDefault();
var q = $("#k").val();
$.ajax({
type: "POST",
url: "zips.php",
data: "q="+ q,
dataType: "html",
success: function(res) {
$("#result").html(res); $('#result').trigger('create');
},
});
});
});
<div data-role="content">
<div id="result"></div>
</div>
It created object like this format.(contents of zips.php)
<? echo " <div><ul id='zips' data-role='listview' data-inset='true' data-theme='c'>";
while($row = mysql_fetch_array($result)) {
$out .= "
<li>
<a name='submit_button' href='#mainPage'><span class='zip1'>$zip1</span>-
<span class='zip2'>$zip2</span><br />
<span class='address'>$row[zp_sido] $row[zp_gugun] $row[zp_dong] $row[zp_bunji] </span></a>
</li> \n";
}
echo $out."</ul>";
?>
And this script get the text() value from dynamic object and insert it to form.
<script>
$(document).ready(function() {
$('a[name=submit_button]').click(function(){
var inputVal1 = $('.zip1, this).text();
var inputVal2 = $('.zip2', this).text();
var inputVal3 = $('.address', this).text();
$('div input[name=zip_code1]').val(inputVal1);
$('div input[name=zip_code2]').val(inputVal2);
$('div input[name=address1]').val(inputVal3);
</script>
<div>
<form>
<input type="text" id='zip_code1' name="zip_code1" > - <input type="text" id='zip_code2 name="zip_code2"><br />
<input type="text" id='address1' name="address1">
</form
</div>
The problem is that "var inputVal1 = $('.zip1, this).text();" gets null from dynamic objects class name "zip1".
Instead of
$('a[name=submit_button]').click(function(){..
use this:
$('#result').on('click', 'a[name=submit_button]', function(){..
As you a[name=submit_button] append to DOM after page load, dynamically via ajax request, so you need delegate event handler to that, ordinary event binding will not work here.
Read more about .on()
Note
For general binding syntax of .on() is like:
$(target).on(eventName, handlerFunction)
but for delegate event systax is
$(container).on(eventName, target, handlerFunction)
Here container is the Static-element that belongs to DOM at page load and contains target and both container and target are valid jQuery selector.
Here is my jQuery using delegate and ajax:
$(".tweets").delegate("#fav #submit", "click", function(){
var favid = $("#fav input#favid").val();
var favsave = 'favid=' + favid;
alert(favsave);
$.ajax({
type: "POST",
url: "fav.php",
data: favsave,
success: function() {
$('#fav').fadeOut(100);
}
});
return false;
});
The HTML:
<div class='tweets'>
<ul class='entries'>
<li>
<form id='fav' method='post' class='favo' action=''>
<input style='display: none;' type='text' name='fav' id='fav' value='".$row["tweetid"]."' />
<input type='submit' value='Add to Favorites' name='submit' id='submit' />
</form>"
</li>
</ul>
</div>
There is another set of Ajax on the page that is constantly adding to the .entries list, these records that get appended pickup the click function, so that when I click on them the Alerts are shown but the Ajax part of the function doesnt work.
Any ideas? Would .live be better?
"doesn't work" is not the best of all descriptions.
Anyway, it makes no sense to use "absolute" selectors within an delegated event.
By querying $("#fav input#favid").val(); you would get results from all elements with that id
you would only get the first match (since ids are assumed to be unique) (which would be unfortunate just because of multiple id tags)
You should grab the target property from the event object to identify the elements which should get involved.
Example:
$(".tweets").delegate("#submit", "click", function(event){
var $self = $(event.target);
var favid = $self.siblings('#fav');
var favsave = 'favid=' + favid;
$.ajax({
type: "POST",
url: "fav.php",
data: favsave,
success: function() {
$self.closests('#fav').fadeOut(100);
}
});
return false;
});
It's probably not a good idea to have IDs for elements which are created dynamically.
As mentioned, it's no valid HTML markup to have multiple ID tags. Should be classes I guess.