Develop Reference

Use variable as selector in function

On click, I want to get the name of the closest div and then look for all div's, that have this name attribute and add a class to them.
Here is my code:
HTML:
<div class="wrapper">
<div class="container" name="button1">
<div class="button">this is p #1</div>
</div>
</div>
<div name="button1">
somewhere else
</div>
JS:
$('.wrapper').on("click", '.button', function() {
var attrname = $(this).closest('.container').attr('name');
$("div[name=attrname]").each(function() {
$(this).addClass("classtobeadded");
});
});
But it is not working. So, how can I use the variable in here:
$("div[name=attrname]").each(function()
Here is the fiddle:

There's a few issues with your logic. Firstly the .container element does not have the name attribute, the .button does, so you don't need to use closest(). Secondly, you need to concatenate the actual name value in to the selector. Lastly div elements do not have a name attribute so the HTML is invalid. If you want to store custom meta-data on an element use a data attribute instead.
Also note that you don't need the each() loop, you can just call addClass() on the collection selected with the data-name attribute. Try this:
$('.wrapper').on("click", '.button', function() {
var attrname = $(this).data('name');
$('div[data-name="' + attrname + '"]').addClass("classtobeadded");
});
.classtobeadded {
background: red;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="wrapper">
<div class="container">
<div class="button" data-name="button1">this is p #1</div>
</div>
</div>
<div data-name="button1">
somewhere else
</div>

You have to concatenate it properly,
$(`div[name=${attrname}]`).each(function() {
And by the way, when looking at your code there is no attribute available in the closest div with a class .container. Check that as well.

$("div[name=" + attrname + "]").each(function() {})
or
$(`div[name=${attrname}]`).each(function() {})

image popup in javascript

i need to give popup for all the images displayed under a div
i tried to add div before and after image tag but its not appending properly
this is my following code
<div class="description">
<img alt="" src="image.jpg" style="height:350px; width:700px" id="imagepopup0"></div>
Expected output
<div class="description">
<div class="fancybox"> //class to be added
<img alt="" src="image.jpg" style="height:350px; width:700px" id="imagepopup0">
</div> // div to be added
</div>

You can use some JQuery for this, but you have to change the html code a bit.
See snippet
$('.imagepopup0').click(function() {
$('.outer').toggle('show');
$('.fancybox').toggle('show');
});
/* Not needed, just for show */
.fancybox {
background-color: blue;
}
.description {
background-color: red;
padding: 30px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="description">
<img src="http://www.jamfoo.com/chat/smiley.png" class="imagepopup0 outer">
<div class="fancybox" style="display: none;">
<img src="http://www.jamfoo.com/chat/smiley.png" class="imagepopup0">
</div>
</div>
JSFiddle

Original answer: jquery, wrap elements inside a div
Could use the .wrapAll() method:
$('#imagepopup0').wrapAll('<div class="fancybox"></div>');
The wrapAll() method will wrap all the elements matched into another element whereas the .wrap() method which wraps the matched elements individually.

Thank you for your suggestion friends i have found a simple solution for that instead of using div i user a tag and fancy box in it
the following code working fine for me
$("#imgid").wrap('<a class ="fancybox" data-fancybox-group="gallery" href="'+srcimg+'" />');
<script type="text/javascript">
// FANCYBOX JS
$(document).ready(function(){
$(".fancybox").fancybox({
// openEffect: "none",
// closeEffect: "none"
});
});
</script>

jquery slideToggle opens all divs instead of just the div that is required

I have a page that can have a variable number of <div> the idea is people can click the + symbol which is an <img> then the div that is linked to the img tag will display.
I currently have:
PHP/HTML
$plus = '<img src="images/plus.png" class="clickme" width="20px" height="20px">';
$table .= '<div>'.$plus.'</div>';
$hidden .= '<div class"diary">-Content-</div>';
JS
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script language="javascript" type="text/javascript">
$(document).ready(function(){
$( ".clickme" ).click(function() {
$( ".diary" ).slideToggle( "slow", function() {
});
});
});
</script>
This obviously opens all divs and not just the one that is clicked on. I have looked at other similar questions on here and have tried a number of variations such as:
$(document).ready(function(){
$(".clickme").click(function(){
$(this).next(".diary").toggle();
});
});
However, when I try these it just stops working altogether. i.e. none of the divs slide up or down. I see the examples work on JS Fiddle but as soon as i apply it to my page I get nothing.
I am possibly doing something really dumb for it not to work but can't see what.
thanks for any help.
The HTML output should look like
<div>
<div>
<table>
<img class="clickme">
</table>
</div>
<div class="diary">
<table> content </table>
</div>
<div>

(based on tht HTML provided)
Best way would be to add an attribute with matching indexes to both elements
<div>test toggle
<div class="clickme" data-index="1">click me</div>
<div class="toggle" id="obj_1">toggled field</div>
</div>
and then in the JQuery:
$(function () {
$(".clickme").click(function () {
//get number from clicked element's attribute
var index =$(this).attr('data-index');
//select element with id that matches index and toggle
$('#obj_'+index).toggle();
});
})

After looking at your code, i can see that the slideToggle call is maded on .diary class which is probably applied on each of your elements.
I suggest you to put your diary div inside the $plus div then use jquery children or simply give your .diary divs a unique id and use the id attribute for your
toggle.
EDIT:
Here is a simple html output:
<div class="clickme">
<div class="diary">CONTENT HERE</div>
</div>
Add this in the CSS:
.clickme {
background: url('images/plus.png') no-repeat top left;
min-width: 20px;
min-height: 20px;
cursor: pointer;
}
Script tag:
<script>
$(function() {
$(".clickme").click(function() {
$(this).children().slideToggle("slow");
});
});
</script>
Note that i'd let the diary class for your usage and styling purpose but it's not used anywhere.

find is not working to select data from dom in jquery

what i need
i need to access href from class events_links .
html code
<div class="row flush frt" itemscope="" itemtype="http://schema.org/Event">
<div class="12u">
<div class="evntblk">
<a itemprop="url" class="events_links" href="/dailymail-ideal-homeshow">
<h2 class="lnh1" itemprop="name">Ideal Home Show - London</h2>
</a>
<div style="display:block; float:right; width:auto; color:#7c7c7c;"></div>
<span itemprop="startDate" class="startdates" content="2015-03-20">20 Mar-06 Apr 2015</span><span itemprop="endDate" class="enddates" content="2015-04-06"></span><br><span itemprop="location" itemscope="" itemtype="http://schema.org/Place"><span itemprop="name" style="display:none">Olympia Exhibition Centre</span><span itemprop="address" itemscope="" itemtype="http://schema.org/PostalAddress"><span itemprop="addressLocality" class="eventcity">London</span>,
<span itemprop="addressCountry" class="eventcountry">UK</span></span></span>
<p class="tal" style="overflow:hidden">The ZEE Asian Pavilions are a celebration of British Asian Culture, that encapsulates Asian food, Asian fashion,...<br><span style="background: none repeat scroll 0 0 #ECECEC; border-radius: 5px; color: #333333; display: inline-block; font-size: 0.8em;line-height: 13px; margin: 5px 2px 0 0 !important; padding: 5px 8px;">Home Furnishings & Home Textiles</span></p>
</div>
<div class="row flush footer"><div class="12u"><a class="button button-blue small">View Details</a></div></div>
js code
$('.small').click(function()
{
alert("test");
window.location.href = $(this).find(".events_links").attr("href");
});
snapshot of html element
i have tried to access with .parent() but it not working.
o/p
i need to access events_links class by click on class small so that i
would get href from that html element.
any suggestion are most welcome.

Simple solution to get only the related url is with parent() function:
$('.small').click(function()
{
window.location.href = $(this).parent().parent().parent().find(".events_links").attr("href");
});
since you are three levels underneath.
find() will start searching from the given object downwards in hierarchy.
BUT as stated before, this will fail, as soon as you change your html layout and maybe drop or add a div container.
it would be much better practice to give your divs containing the urls unique id's or store the link with the data attribute of the button.
So for example if in your HTML Code you had this
<div id="link12" class="event_links" href="FOUND THIS!">
<div class="whatever">
<div class="anotherone">
<div class="button small" data-link="link12" data-href="FOUND THIS HERE TOO!">
CLICK HERE
</div>
</div>
</div>
</div>
Then your click code could access URL via 2 methods:
$('.small').click(function()
{
// METHOD 1: get by storing unique id with button
alert($('#'+$(this).attr('data-link')).attr("href"));
// METHOD 2: same effect, but shorter storing href at button
alert($(this).attr('data-href'));
});

try this
$('.small').click(function() {
alert("test");
window.location.href = $(".events_links").attr("href");
});

I would suggest data-attr in this case, where you do not want to depend on code structure and css.
<div class="row flush footer">
<div class="12u">
<a class="button button-blue small" data-relative-path="some-location">View Details</a>
</div>
</div>
And
$('.small').click(function(){
window.location.href = $(this).data('relative-path');
});

You can try this one:
$('.small').click(function() {
alert("test");
window.location.href = $(".evntblk .events_links").attr("href");
});

If you need to get only href of the single .event_links object in the current .box.panel do:
$('.small').click(function()
{
alert("test");
window.location.href = $(this).closest(".box.panel").find(".events_links").attr("href");
});
closest will get you the first parent element that matches the selector. This way if you have any other .event_links that are not into this panel, they'll be skipped. If you use parent() you'll be forced to keep the same HTML sturcture between the .small and it's parents.

First of all it's bad practice to try and load a url based on a css class. That is because it is probable you use css classes repeatedly on a single page, resulting in multiple anchor selections.
However you could do the following:
$('.small').click(function()
{
var btn = $(this);
// find the closest element of click button with class 'event-block'
// find the element with class 'events_links'
// change window location to value at href
window.location.href = btn.closest('.event-block').find('.events_links').attr("href");
});

accessing an element of a class in jquery not working

I want to access different id's (with same name) using $this in jquery, but its not working.
I want when a superhero is clicked only his friend and he himself change their class only.
<!DOCTYPE html>
<html>
<head>
<title>Try jQuery 2.0.0 Online</title>
<script src="http://code.jquery.com/jquery-2.0.0.min.js"></script>
<script>
$(document).ready(function() {
$('.shikhar').click(function(){
$(this).find('#a').click(function(){
$(this).find('#b').addClass("selected");
$(this).find('#a').addClass("highlight");
});
$(this).find('#b').click(function(){
$(this).find('#a').addClass("selected");
$(this).find('#b').addClass("highlight");
});
});
});
</script>
<style>
.selected {
color:red;
}
.highlight {
background:yellow;
}
</style>
</head>
<body>
<div class="shikhar">
<div id="a">Spiderman</div>
<div id="b">Hulk</div>
</div>
<div class="shikhar">
<div id="a">Superman</div>
<div id="b">Batman</div>
</div>
</body>
</html>

ID attributes must be unique. JavaScript stops searching as soon as it finds the first element with a matching ID. Simply change those IDs into classes instead:
<div class="a">Spiderman</div>
...
<div class="a">Superman</div>
Then change your jQuery selectors to $('.a') and $('.b') instead:
$(this).find('.a').click(function(){
$(this).find('.b').addClass("selected");
$(this).find('.a').addClass("highlight");
});

You have duplicate ids. IDs should be unique. You can use the markup:
<div class="shikhar">
<div class="a">Spiderman</div>
<div class="b">Hulk</div>
</div>
<div class="shikhar">
<div class="a">Superman</div>
<div class="b">Batman</div>
</div>
And JS:
$('.shikhar').click(function(){
$(this).find('.a').click(function(){
$(this).next().addClass("selected");
$(this).addClass("highlight");
});
$(this).find('.b').click(function(){
$(this).prev().addClass("selected");
$(this).addClass("highlight");
});
});

you cant use the same ID for different elements. use ID for only one element.
HTML:
<div class="shikhar">
<div class="a">Spiderman</div>
<div class="b">Hulk</div>
</div>
<div class="shikhar">
<div class="a">Superman</div>
<div class="b">Batman</div>
</div>
jQuery:
$('.shikhar').each(function(){
$(this).on('click','.a, .b',function(){
$(this).closest('.shikhar').children().removeClass('selected highlight');
$(this).addClass('selected');
$(this).siblings().addClass('highlight');
});
});
Fiddle:
http://jsfiddle.net/me2DE/

Try this:
$(document).ready(function() {
$('.shikhar >').click(function(){
$(this).addClass("highlight");
$(this).siblings('div').addClass("selected");
});
});

Here is your answer: http://jsfiddle.net/S5rbz/ But it's wrong to have more items with the same id value on the same page. So replace the id's with class values.Later edit: also, I think you want to remove the existing class, for each children, and add the new class, as if you keep adding the classes, they will be overwritten by the last named class(also keep in mind the cascading rule declarations).