I have a list of employees generated dynamically from database, and each employee has got an id, now I want to open a div box on each click with respect to the id's and display their id's in that box.
I am not able to access that div with respect to the id selected.
include 'connect.php';
$ert=mysql_query("Select * from login_session where bit='0' and date='$date'") or die(mysql_error());
while($we=mysql_fetch_array($ert)){
$employee_id=$we['employee_id'];
?>
<li> <?php echo $we['name'];?></li>
<div class="popup-box chat-popup" id="employee_<?php echo $employee_id; ?>">
<div class="popup-head">
<div class="popup-head-left pull-left"><img src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" alt="iamgurdeeposahan"> Gurdeep Osahan
</div>
<div class="popup-head-right pull-right">
<div class="btn-group">
<button class="chat-header-button" data-toggle="dropdown" type="button" aria-expanded="false">
<i class="glyphicon glyphicon-cog"></i> </button>
<ul role="menu" class="dropdown-menu pull-right">
<li>Media</li>
<li>Block</li>
<li>Clear Chat</li>
<li>Email Chat</li>
</ul>
</div>
<button data-widget="remove" class="removeClass chat-header-button pull-right" type="button"><i class="glyphicon glyphicon-off"></i></button>
</div>
</div>
<div class="popup-messages">
<div class="direct-chat-messages">
<div class="chat-box-single-line">
<abbr class="timestamp">October 8th, 2015</abbr>
</div>
<!-- Message. Default to the left -->
<div class="direct-chat-msg doted-border">
<div class="direct-chat-info clearfix">
<span class="direct-chat-name pull-left">Osahan</span>
</div>
<!-- /.direct-chat-info -->
<img alt="message user image" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img"><!-- /.direct-chat-img -->
<div class="direct-chat-text">
Hey bro, how’s everything going ?
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-timestamp pull-right">3.36 PM</span>
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-img-reply-small pull-left">
</span>
<span class="direct-chat-reply-name">Singh</span>
</div>
<!-- /.direct-chat-text -->
</div>
<!-- /.direct-chat-msg -->
<div class="chat-box-single-line">
<abbr class="timestamp">October 9th, 2015</abbr>
</div>
<!-- Message. Default to the left -->
<div class="direct-chat-msg doted-border">
<div class="direct-chat-info clearfix">
<span class="direct-chat-name pull-left">Osahan</span>
</div>
<!-- /.direct-chat-info -->
<img alt="iamgurdeeposahan" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img"><!-- /.direct-chat-img -->
<div class="direct-chat-text">
Hey bro, how’s everything going ?
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-timestamp pull-right">3.36 PM</span>
</div>
<div class="direct-chat-info clearfix">
<img alt="iamgurdeeposahan" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img big-round">
<span class="direct-chat-reply-name">Singh</span>
</div>
<!-- /.direct-chat-text -->
</div>
</div>
</div>
<div class="popup-messages-footer">
<textarea id="status_message" placeholder="Type a message..." rows="10" cols="40" name="message"></textarea>
<div class="btn-footer">
<button class="bg_none"><i class="glyphicon glyphicon-film"></i> </button>
<button class="bg_none"><i class="glyphicon glyphicon-camera"></i> </button>
<button class="bg_none"><i class="glyphicon glyphicon-paperclip"></i> </button>
<button class="bg_none pull-right"><i class="glyphicon glyphicon-thumbs-up"></i> </button>
</div>
</div>
</div>
<script>
$(function(){
$(".addClass").click(function () {
var var1=$(this).data('employee');
$('#employee_'+var1).addClass('popup-box-on');
});
$(".removeClass").click(function () {
var var1=$(this).data('employee');
$('#employee_'+var1).removeClass('popup-box-on');
});
})
</script>
Firstly , inside the anchor tag <a> with class .addClass , you are using $we['employee_id'] and then for it's respective box you are using $employee_id which is null and it results to an undefined variable error.
You should give the trigger and target selectors a unqiue identifiers , such as for .addClass you can use data attributes for appending the data to target something. look below:
<?php echo $we['name'];?>
and then for respective box id you can assign a unique id to it something like:
<div class="popup-box chat-popup" id="employee_<?php echo $employee_id; ?>">
and at the end inside javascript / jquery , you can trigger them with the data attribute value and by placing the unique identifier we have created for target div. let say .addClass's data attribute contains 34, which is a employee id , and .popup-box will have id="employee_34" as we need to identify them with something unique and not only numbers.
$(function(){
$(".addClass").click(function () {
var var1=$(this).data('employee');
$('#employee_'+var1).addClass('popup-box-on');
});
});
at the end you php and html code should look like this:
include 'connect.php';
$ert=mysql_query("Select * from login_session where bit='0' and date='$date'") or die(mysql_error());
while($we=mysql_fetch_array($ert)){
?>
<li> <?php echo $we['name'];?></li>
<div class="popup-box chat-popup" id="employee_<?php echo $employee_id; ?>">
<div class="popup-head">
<div class="popup-head-left pull-left"><img src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" alt="iamgurdeeposahan"> Gurdeep Osahan
</div>
<div class="popup-head-right pull-right">
<div class="btn-group">
<button class="chat-header-button" data-toggle="dropdown" type="button" aria-expanded="false">
<i class="glyphicon glyphicon-cog"></i> </button>
<ul role="menu" class="dropdown-menu pull-right">
<li>Media</li>
<li>Block</li>
<li>Clear Chat</li>
<li>Email Chat</li>
</ul>
</div>
<button data-widget="remove" id="removeClass" class="chat-header-button pull-right" type="button"><i class="glyphicon glyphicon-off"></i></button>
</div>
</div>
<div class="popup-messages">
<div class="direct-chat-messages">
<div class="chat-box-single-line">
<abbr class="timestamp">October 8th, 2015</abbr>
</div>
<!-- Message. Default to the left -->
<div class="direct-chat-msg doted-border">
<div class="direct-chat-info clearfix">
<span class="direct-chat-name pull-left">Osahan</span>
</div>
<!-- /.direct-chat-info -->
<img alt="message user image" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img"><!-- /.direct-chat-img -->
<div class="direct-chat-text">
Hey bro, how’s everything going ?
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-timestamp pull-right">3.36 PM</span>
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-img-reply-small pull-left">
</span>
<span class="direct-chat-reply-name">Singh</span>
</div>
<!-- /.direct-chat-text -->
</div>
<!-- /.direct-chat-msg -->
<div class="chat-box-single-line">
<abbr class="timestamp">October 9th, 2015</abbr>
</div>
<!-- Message. Default to the left -->
<div class="direct-chat-msg doted-border">
<div class="direct-chat-info clearfix">
<span class="direct-chat-name pull-left">Osahan</span>
</div>
<!-- /.direct-chat-info -->
<img alt="iamgurdeeposahan" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img"><!-- /.direct-chat-img -->
<div class="direct-chat-text">
Hey bro, how’s everything going ?
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-timestamp pull-right">3.36 PM</span>
</div>
<div class="direct-chat-info clearfix">
<img alt="iamgurdeeposahan" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img big-round">
<span class="direct-chat-reply-name">Singh</span>
</div>
<!-- /.direct-chat-text -->
</div>
</div>
</div>
<div class="popup-messages-footer">
<textarea id="status_message" placeholder="Type a message..." rows="10" cols="40" name="message"></textarea>
<div class="btn-footer">
<button class="bg_none"><i class="glyphicon glyphicon-film"></i> </button>
<button class="bg_none"><i class="glyphicon glyphicon-camera"></i> </button>
<button class="bg_none"><i class="glyphicon glyphicon-paperclip"></i> </button>
<button class="bg_none pull-right"><i class="glyphicon glyphicon-thumbs-up"></i> </button>
</div>
</div>
</div>
<?php } ?>
and your javascript code like below:
$(function(){
$(".addClass").click(function () {
var var1=$(this).data('employee');
$('#employee_'+var1).addClass('popup-box-on');
});
});
and do in this way same for removing the respective box for employee div.
Note
As the popup-box div's are multiple and are already inside the dom , you should not use id selector for remove trigger , as it will target only first div and not others , use an class for removing the div as well such as removeBox
Update for remove
For removing the div, don't use id for removing the div , change your remove button to the following:
<button data-widget="remove" data-employee="<?php echo $we['employee_id']; ?>" class="chat-header-button removeClass pull-right" type="button"><i class="glyphicon glyphicon-off "></i></button>
and use the below jquery code for removing the div
$(function(){
$(".removeClass").click(function () {
var var1=$(this).data('employee');
$('#employee_'+var1).removeClass('popup-box-on');
});
});
Related
I have 3 div's in a View. Every div has unique single_value. so when i click on any of that it should alert that data value. For that i used the following script
$(document).on('click','.single_school',function(){
var school = $( ".single_school" ).attr('data-value');
alert(school)
});
But the problem is i'm only getting the first value whatever div I clicked on. How do i print only the specific div I clicked on.
Here is the View:
<div class="col-md-2 col-sm-4 col-xs-12">
<div class="single_school" data-value="1">
<div class="selection_area choosen_school">
<span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
</div>
<div class="school_info">
<p class="school_name">ABC</p>
</div>
</div>
</div>
<div class="col-md-2 col-sm-4 col-xs-12">
<div class="single_school" data-value="2">
<div class="selection_area choosen_school">
<span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
</div>
<div class="school_info">
<p class="school_name">XYZ</p>
</div>
</div>
</div>
<div class="col-md-2 col-sm-4 col-xs-12">
<div class="single_school" data-value="3">
<div class="selection_area choosen_school">
<span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
</div>
<div class="school_info">
<p class="school_name">PQR</p>
</div>
</div>
</div>
$(document).on('click','.single_school',function(){
var school = $(this).attr('data-value');
alert(school)
});
You should use JQuery data() to fetch the value when clicked on the element. And secondly you should use $(this) to get the current element value and not the classname. In your code, it would always give one result because you are using $( ".single_school" ). This should be replaced with $(this):
$(document).on('click', '.single_school', function() {
var school = $(this).data('value');
alert(school)
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="col-md-2 col-sm-4 col-xs-12">
<div class="single_school" data-value="1">
<div class="selection_area choosen_school">
<span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
</div>
<div class="food_info">
<p class="school_name">ABC</p>
</div>
</div>
</div>
<div class="col-md-2 col-sm-4 col-xs-12">
<div class="single_school" data-value="2">
<div class="selection_area choosen_school">
<span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
</div>
<div class="food_info">
<p class="school_name">XYZ</p>
</div>
</div>
</div>
<div class="col-md-2 col-sm-4 col-xs-12">
<div class="single_school" data-value="3">
<div class="selection_area choosen_school">
<span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
</div>
<div class="food_info">
<p class="school_name">PQR</p>
</div>
</div>
</div>
I have this chat box and this go_to_top icon. Is that possible to hide the icon when the box is clicked and open, and display it again when its closed?
This is how it looks in my local host (view extern):
This my ChatBox code
<section class="btn-xs bd-section-5 hidden-xs bd-page-width bd-tagstyles" id="section5" data-section-title="Section">
<div class="bd-container-inner bd-margins clearfix">
<div class=" bd-layoutbox-9 bd-page-width bd-no-margins clearfix">
<div type="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" class="chatbutton bd-container-inner btn btn-default">
<h4 class=" bd-textblock-11 bd-content-element">
<span style="font-weight: normal;">Call us on</span> 0800 0125 888
</h4>
</div>
<div class="panel-collapse collapse" id="collapseOne">
<div class="panel-body">
<ul class="chat">
<li class="left clearfix"><span class="chat-img pull-left">
<img src="./assets/images/<?php echo ($cruise_avatar[0]); ?>.png" alt="<?php echo ($cruise_avatar[0]); ?>" class="img-circle" />
</span>
<div class="chat-body clearfix">
<div class="header">
<strong class="primary-font"><?php echo ($cruise_avatar[1]); ?></strong> <small class="pull-right text-muted">
<span class="glyphicon glyphicon-time"></span><?php echo date("h:i:s A"); ?></small>
</div>
<p>
<?php echo ($cruise_avatar[2]); ?>
</p>
</div>
</li>
<li class="right clearfix"><span class="chat-img pull-right">
<img src="http://placehold.it/50/FA6F57/fff&text=ME" alt="User Avatar" class="img-circle" />
</span>
<div class="chat-body clearfix">
<div class="header">
<small class=" text-muted"><span class="glyphicon glyphicon-time"></span><?php echo date("h:i:s A"); ?></small>
<strong class="pull-right primary-font">Bhaumik Patel</strong>
</div>
<p>
<?php echo ($cruise_avatar[2]); ?>
</p>
</div>
</li>
</ul>
</div>
<div class="panel-footer">
<div class="input-group">
<input id="btn-input" type="text" class="form-control input-sm" placeholder="Type your message here..." />
<span class="input-group-btn">
<button class="btn btn-warning btn-sm" id="btn-chat">
Send</button>
</span>
</div>
</div>
</div>
</div>
</div>
</section>
And that's it looks like this when clicked (view extern):
I tried to hide it with jQuery like this: UPDATE it to
<script>
$(document).ready(function(){
$(".bd-layoutbox-9").click(function(){
if ($("span.bd-icon-67.bd-icon").css("display","inline-block")){
$("span.bd-icon-67.bd-icon").css("display","none");
}
else if ($("span.bd-icon-67.bd-icon").css("display","none")){
$("span.bd-icon-67.bd-icon").css("display","inline-block");
}
});
});
</script>
and my span code
<div data-smooth-scroll data-animation-time="250" class=" bd-smoothscroll-3">
<span class="bd-icon-67 bd-icon "></span>
</div>
I can hide it when Chatbox is open, but when i close it is not displayed again.
I've made a profile page on which user's posts are displayed, user can perform function delete or edit post.But,
when i click on edit post on any of my post ,only content of first post is fetched in the modal.
my js code:
$('.dropdown-menu').find('.edit').on('click', function(e) {
e.preventDefault();
var postbody = $('#fetch').find('p').text();
$('#post-body').val(postbody);
$('#edit-modal').modal();
});
my view code:
#foreach($posts as $post) #if(Auth::user()== $post->user)
<div class="panel panel-default">
<div class="panel-heading">
<div class="row">
<section class="col-md-2 col-xs-2">
<img id="imagesize2" src="images/g.jpg" class="img-circle" data- action="zoom" />
</section>
<section class="col-md-5 col-xs-offset-1 col-xs-5">
<a id="alink13" href=""><h5 id="alink14">{{$post->user->firstname}}</h5> </a>
<p>on {{$post->created_at}}</p>
</section>
<section class="col-md-offset-3 col-md-2 col-xs-4 col-lg-offset-1">
<div class="btn-group">
<button id="btnclr4" type="button" class="btn btn-default dropdown- toggle" data-toggle="dropdown" aria-expanded="false"><span class="glyphicon glyphicon-chevron-down"></span>
</button>
#if(Auth::user()==$post->user)
<ul id="remove" class="dropdown-menu" role="menu">
<a id="remove2" href="{{route('post.delete',['post_id' => $post->id])}}">
<li role="presentation">Remove This Post</li>
</a>
<a href="" class="edit">
<li role="presentation">Edit This Post</li>
</a>
</ul>
#endif
</section>
</div>
</div>
<div class="panel-content">
<div class="row" id="fetch">
<section class="col-md-12">
<p>{{$post->body}}</p>
</section>
</div>
</div>
This question already has answers here:
Event binding on dynamically created elements?
(23 answers)
Closed 7 years ago.
<input type="text" id="message" param="1" placeholder="chat here.." />
This is element inside the div which is working fine outside the javascript
here is the case after appended element
$('.chat-wrapper').append('<li class="one-big-icon mega-li mgl-10"> <span class="mega-icon"><img alt="example image" class="chat-initatior" src="'+img_url+'"></span> <span class="badge vd_bg-red">10</span> <div class="vd_mega-menu-content open-top width-xs-4 width-md-5 width-lg-4 center-xs-4 chat-box'+id+'" data-action="click-target"> <div class="child-menu"> <div class="title"> ujwal <i>(online)</i> <div class="vd_panel-menu"> <div data-rel="tooltip" data-original-title="Close" class="menu entypo-icon"> <i class="icon-cross"></i> </div> </div> </div> <div class="content-list content-image content-menu"> <div data-rel="scroll"> <ul class="list-wrapper pd-lr-10"> <li> <div class="menu-icon"><img alt="example image" src=""></div> <div class="menu-text"> Do you play or follow any sports? <div class="menu-info"> <span class="menu-date">12 Minutes Ago </span> </div> </div> </li> </ul> </div> <div class="closing chat-area"> <div class="chat-box"> <input type="text" id="message" placeholder="chat here.." /> </div> <div class="vd_panel-menu"> <div data-rel="tooltip" data-original-title="Insert Picture" class="menu"> <i class="icon-camera"></i> </div> <div data-rel="tooltip" data-original-title="Emoticons" class="menu"> <i class="fa fa-smile-o"></i> </div> </div> </div> </div> </div> <!-- child-menu --> </div> <!-- vd_mega-menu-content --> </li>');
Now when I do
$('#message').keypress(function(event){
alert('WORKING');
});
alert('working') only works when I type any key in the first element after the append is made on some click and if I type something inside that appended input box I get nothing but why?
Look at using .on() or .live() depending on your jQuery version to bind to elements that are appended.
$("div").on( "keypress", "#message", function(){
alert( "working!" );
});
where div is the selector of a parent of #message.
here work fine;
https://jsfiddle.net/mig1098/0rgd3ppu/
var id='one',img_url='http';//test values
$('.chat-wrapper').append('<li class="one-big-icon mega-li mgl-10"> <span class="mega-icon"><img alt="example image" class="chat-initatior" src="'+img_url+'"></span> <span class="badge vd_bg-red">10</span> <div class="vd_mega-menu-content open-top width-xs-4 width-md-5 width-lg-4 center-xs-4 chat-box'+id+'" data-action="click-target"> <div class="child-menu"> <div class="title"> ujwal <i>(online)</i> <div class="vd_panel-menu"> <div data-rel="tooltip" data-original-title="Close" class="menu entypo-icon"> <i class="icon-cross"></i> </div> </div> </div> <div class="content-list content-image content-menu"> <div data-rel="scroll"> <ul class="list-wrapper pd-lr-10"> <li> <div class="menu-icon"><img alt="example image" src=""></div> <div class="menu-text"> Do you play or follow any sports? <div class="menu-info"> <span class="menu-date">12 Minutes Ago </span> </div> </div> </li> </ul> </div> <div class="closing chat-area"> <div class="chat-box"> <input type="text" id="message" placeholder="chat here.." /> </div> <div class="vd_panel-menu"> <div data-rel="tooltip" data-original-title="Insert Picture" class="menu"> <i class="icon-camera"></i> </div> <div data-rel="tooltip" data-original-title="Emoticons" class="menu"> <i class="fa fa-smile-o"></i> </div> </div> </div> </div> </div> <!-- child-menu --> </div> <!-- vd_mega-menu-content --> </li>');
$('#message').keypress(function(event){
alert(event.keyCode);
});
I am trying to find clicked button value.here is my htmlcode,I am not able to get but always getting first one.
<div id="addSentiment" class="dialogs">
<div id="1" class="dialogs">
<div class="itemdiv dialogdiv">
<div class="user">
<img src="assets/avatars/avatar1.png" alt="Alexas Avatar">
</div>
<div class="body">
<div class="time"> <i class="ace-icon fa fa-clock-o"></i>
<span class="green">Date : 10/01/2014</span>
</div>
<div class="name"> ki#n.com
</div>
<div id="cat_1" class="text">category : Scheduling
<br>
</div>
<div id="op_1" class="text">ddd word/phrase : providing solutions
<br>
</div>
<div id="feature_1" class="text">ddd word/phrase : listen to
<br>
</div>
<div class="text">
<input type="hidden" value="1" name="hd">
</div>
<div class="tools"> <a id="edit_1" class="btn acebtn btn-minier btn-info" href="#">
<i class="icon-only ace-icon fa fa-share"></i>
</a>
</div>
</div>
</div>
</div>
<div id="2" class="dialogs">
<div class="itemdiv dialogdiv">
<div class="user">
<img src="assets/avatars/avatar1.png" alt="Alexas Avatar">
</div>
<div class="body">
<div class="time"> <i class="ace-icon fa fa-clock-o"></i>
<span class="green">Date : 10/01/2014</span>
</div>
<div class="name"> tc#n.com
</div>
<div id="cat_2" class="text">category : Scheduling
<br>
</div>
<div id="op_2" class="text">dddd : providing solutions
<br>
</div>
<div id="feature_2" class="text">ddddddde : listen to
<br>
</div>
<div class="text">
<input type="hidden" value="2" name="hd">
</div>
<div class="tools"> <a id="edit_2" class="btn acebtn btn-minier btn-info" href="#">
<i class="icon-only ace-icon fa fa-share"></i>
</a>
</div>
</div>
</div>
</div>
<div id="3" class="dialogs">
<div class="itemdiv dialogdiv">
<div class="user">
<img src="assets/avatars/avatar1.png" alt="Alexas Avatar">
</div>
<div class="body">
<div class="time"> <i class="ace-icon fa fa-clock-o"></i>
<span class="green">Date : 10/01/2014</span>
</div>
<div class="name"> tn#nn.com
</div>
<div id="cat_3" class="text">category : Scheduling
<br>
</div>
<div id="op_3" class="text">Opinion word/phrase : providing solutions
<br>
</div>
<div id="feature_3" class="text">Feature word/phrase : listen to
<br>
</div>
<div class="text">
<input type="hidden" value="3" name="hd">
</div>
<div class="tools"> <a id="edit_3" class="btn acebtn btn-minier btn-info" href="#">
<i class="icon-only ace-icon fa fa-share"></i>
</a>
</div>
</div>
</div>
</div>
</div>
I tried following code in jquery
$(".dialogs .itemdiv .tools").live("click",function(e){
e.preventDefault();
alert('clicked on edit');
var n = $('.dialogs .itemdiv .tools a').attr('id');
alert(n);
});
I use live here because I am getting above html by using append method in jquery.
live is deprecated in later versions of jQuery - but to solve your issue you need to use an instance of this
$("#addSentiment").on("click", ".dialogs .itemdiv .tools", function(e){
e.preventDefault();
alert('clicked on edit');
var n = $("a", this).attr('id');
alert(n);
});
jQuery selectors catch the first match of their content.
To catch the n-th match, you need to use the n-th child selector, like this:
$(".dialogs .itemdiv .tools:nth-child(2)")
I am not familiar with the live method, but you should be able to do something like the following:
function addHandlers() {
$(".dialogs .itemdiv .tools a").each(function() {
$(this).click(function() {
alert('clicked on edit');
);
});
}
function yourAppendFunction() {
//your append code
//add call to a function that will create your event handlers
addHandlers();
}
The .each method runs through each and every item that fits the selection criteria, and then we use the this keyword within the function to reference what we are working on. Putting it in a function that we don't call until after you append the items ensures the html exists when you try to add the handlers you need.
API references:
each method: http://api.jquery.com/each/
click method: http://api.jquery.com/click/