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Can I check with jQuery if element has specific class and edit only this element?

if (jQuery("li.store .premise")[0]) {
jQuery(".address .arrow").remove();
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="store">
<div class="address">
<span class="arrow"></span>
<div class="results-toggle">
<div class="shop-address">
<div class="street-block">
<div class="thoroughfare">demo address</div>
<div class="premise">additional info</div>
</div>
<div class="addressfield-container-inline locality-block country-BG"><span
class="locality">New York</span></div>
<span class="country">USA</span>
</div>
<div class="shop-phone">+1 4258741</div>
</div>
</div>
</div>
Is there a way to check if an element contains specific class and if it does, then to edit only this or these elements.
I have a list of stores and I want if some of them contain specific class to remove the arrows.
I tried with this but it removes all elements with a class arrow and I want to remove the only storeеthat have the specific class which in this case is class="premise"

Closest using get parent element then find class for .arrow then remove method using removed.
$(".store .premise").closest(".address").find('.arrow').remove();

Once you have a collection of premises, use .closest to navigate to their ancestor address, from which you can get to the .arrows:
$('div.store .premise').closest('.address').find('.arrow').remove();
(assuming that the .store element in your actual code is a <li>, otherwise use div.store or just .store)
$('div.store .premise').closest('.address').find('.arrow').remove();
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="store">
<div class="address">
<span class="arrow">arrow here</span>
<div class="results-toggle">
<div class="shop-address">
<div class="street-block">
<div class="thoroughfare">demo address</div>
<div class="premise">additional info</div>
</div>
<div class="addressfield-container-inline locality-block country-BG"><span class="locality">New York</span></div>
<span class="country">USA</span>
</div>
<div class="shop-phone">+1 4258741</div>
</div>
</div>
</div>

Change Text on another Div

Good evening Community,
I have a problem with my code.
HTML:
<a href="aboutme.php">
<div class='aboutus'>
<div id="mbubble">
stuff inside here
</div>
</div>
</a>
<div id='title'>
<div class="thome"><p style="letter-spacing:10;">Text BEFORE</p></div>
<div class="tabout"><p style="letter-spacing:10;">Text AFTER</p></div>
I want if I hover over the div "mbubble" that the class "thome" will change it's text. I tried to do that by making them visible / invisible.
CSS:
#mbubble:hover ~ .thome { visibility:hidden; }
#mbubble:hover ~ .tabout { visibility:visible; }
But it's sowhing no affect?
Can you tell me how you would do that? Or at least any way that's working to change the text by hovering?
Best regards,
Michael

How about this:
$('#mbubble').hover(function () {
$('.thome').html('<p style="letter-spacing:10;">NOW IT IS DIFFERENT</p>');
})

If your structure is really that simple, then a trick with pointer-events could work:
the idea is to kill pointer-events on a and reactivate it only on #mbubble, since when you hover a child, parent is hovered too, the selector can be taken from the parent .
a {pointer-events:none; }
#mbubble {pointer-events:auto;}
a:hover + #title .thome , .tabout {display:none;}
a:hover + #title .tabout {display:block;}
<a href="aboutme.php">
<div class='aboutus'>i don't trigger anything
<div id="mbubble">
I DO
</div>
</div>
</a>
<div id='title'>
<div class="thome"><p style="letter-spacing:10;">Text BEFORE</p></div>
<div class="tabout"><p style="letter-spacing:10;">Text AFTER</p></div>
Now, if you realize that without pointer-events but only a;hover it works , you may understand it can be usefull only if there is other content in <a> that should not react . only clicking on #mbubble will fire the link.Was your example too little ? if not, just use a:hover
http://caniuse.com/#search=pointer-events

It look doable in css, anyway, while not recommmended, there is a quick inline solution in javascript using the transversal DOM, like this:
You got to keep in mind that it can have strange behaviors, non easily copiable by right clicking, this is why inline javascripts should not be used directly. There is workaround around it, good luck.
<a href="aboutme.php">
<div class='aboutus'>
<div onmouseover="document.getElementById('title').children[0].children[0].textContent='Enter the void!'" id="mbubble">
stuff inside here
</div>
</div>
</a>
<div id='title'>
<div class="thome"><p style="letter-spacing:10;">Text BEFORE</p></div>
<div class="tabout"><p style="letter-spacing:10;">Text AFTER</p></div>
So a more nicer way is to use a function like this:
<a href="aboutme.php">
<div class='aboutus'>
<div onmouseover="changeText()" id="mbubble">
stuff inside here
</div>
</div>
</a>
<div id='title'>
<div class="thome"><p style="letter-spacing:10;">Text BEFORE</p></div>
<div class="tabout"><p style="letter-spacing:10;">Text AFTER</p></div>
<script>
function changeText() {
document.getElementById('title').children[0].children[0].textContent='Enter the void!'
}
</script>
Still, this isn't clean enough, the good way in javascript is to add an event listener, like this:
-
<a href="aboutme.php">
<div class='aboutus'>
<div id="mbubble">
stuff inside here
</div>
</div>
</a>
<div id='title'>
<div class="thome">
<p style="letter-spacing:10;">Text BEFORE</p>
</div>
<div class="tabout">
<p style="letter-spacing:10;">Text AFTER</p>
</div>
<script>
var toBeWatched = document.getElementById('mbubble');
toBeWatched.addEventListener("mouseover", function(event) {document.getElementById('title').children[0].children[0].textContent
= 'Enter the void!';setTimeout(function() { document.getElementById('title').children[0].children[0].textContent
= 'Text BEFORE!!!';
}, 2500);
}, false);
</script>
This way the html part is left untouched. (..)

Get data from element without id or class

I am building a Chrome extension (and therefore can only use JavaScript) and I need to get the link that resides in the h2 with the heading2 class.
However, there are multiple h2 items with that class (not shown here), and I will not know what the link will point to, as it changes monthly.
In this example, the content of the header is "Think before you tweet". It will always be under another header that contains the words "Featured Topic."
What I am looking to get is the /think_before_you_tweet from the href= of that h2 item. It shows that I have already completed the topic underneath the h2, but that will not always be the case.
Here is the code for the website:
<div class="chosen_for_you_section">
<div class="internal_container">
<h2 class="section_header"><img src="/public/s360/img/360-spinner.png" class="s360LogoHeader">Featured Topic <i class="fa fa-info-circle"></i> <span class="infoTxt">Read about what to do</span></h2>
<article class="article_block masonry_item " data-article_id="431">
<div class="article_image">
<img src="/thumb/public/media/nh/images/twitter_tweet_think_before_send.png?q=&h=278" />
<i class="fa fa-check-square-o article_complete article_type_icon" title="Article"></i>
<div class="action_icons">
<span class="like "><a title="Favorite"><i class="fa fa-heart"></i></a></span>
</div>
</div>
<header>
<h2 class="heading2">Think Before You Tweet!</h2>
<div class="article_required_complete">Congratulations, you've completed this required topic.</div>
<div class="category_blocks">
<p>
Social Media
</p>
</div>
</header>
</article>
<div class="focus_items">
<div class="home_side">
<p>
<img alt="" src="" style="width: 430px; height: 422px;" /><!-- I hid the img src here because it reveals some personal information and is not important -->
</p>
<p></p>
</div>
</div>
</div>
</div>
I can use jQuery in my extension, but I do not have any back-end capabilities.

Use jQuery :contains selector:
$('h2.section_header:contains("Featured Topic") + article a')[0].href

Looks like you've gotta loop through the h2.section_header headers, see if the text matches whatever you want, and then grabs the link from the header following itself.
$('h2.section_header').each(function(index, element) {
var $element = $(element);
if ($element.text().match(/Featured Topic/i)) {
$('#result').html($element.next('article').find('h2.heading2 a').attr('href'));
}
});
#result {
border: 3px solid red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="result"></div>
<div class="chosen_for_you_section">
<div class="internal_container">
<h2 class="section_header"><img src="/public/s360/img/360-spinner.png" class="s360LogoHeader">Featured Topic <i class="fa fa-info-circle"></i> <span class="infoTxt">Read about what to do</span></h2>
<article class="article_block masonry_item " data-article_id="431">
<div class="article_image">
<img src="/thumb/public/media/nh/images/twitter_tweet_think_before_send.png?q=&h=278" />
<i class="fa fa-check-square-o article_complete article_type_icon" title="Article"></i>
<div class="action_icons">
<span class="like "><a title="Favorite"><i class="fa fa-heart"></i></a></span>
</div>
</div>
<header>
<h2 class="heading2">Think Before You Tweet!</h2>
<div class="article_required_complete">Congratulations, you've completed this required topic.</div>
<div class="category_blocks">
<p>
Social Media
</p>
</div>
</header>
</article>
<div class="focus_items">
<div class="home_side">
<p>
<img alt="" src="" style="width: 430px; height: 422px;" /><!-- I hid the img src here because it reveals some personal information and is not important -->
</p>
<p></p>
</div>
</div>
</div>
</div>

with jQuery's :contains selector use this:
jQuery('h2:contains("Featured Topic") ~ article h2.heading2 a').attr('href')
try at http://jsfiddle.net/ug01a0d2/
without jQuery try to bind to class "section_header" or use a cycle with the textContent check to iterate all "h2.section_header"

If there are multiple H2 class heading2 :
$('h2[class*="heading2"] a').each(function(){
var href = $(this).attr('href');
// Do what you want with this href
});

Use XPath! The syntax is pretty, uh, unfortunate, but it's very powerful:
var result = document.evaluate('//h2[#class="section_header"]/following-sibling::article//h2[#class="heading2"]/a', document, null, XPathResult.ANY_TYPE, null );
That should select that anchor node. I'm not sure if it's available to extensions, but Chrome defines a handy helper method called $x that eliminates all that boilerplate around the query.
More information: https://developer.mozilla.org/en-US/docs/Introduction_to_using_XPath_in_JavaScript

Identifying Specific Div instead of using .next()?

I just want to move the .step1 div so it won't be right next to the #step4m div that way no matter where it is on the page, the code should work the same since it will identify the specific div instead of using .next()
The HTML:
<div class="step1 marker_show">
<a id="q1_one" class="step_button s1 run_loading" href="">option 1</a>
<a id="q1_two" class="step_button s1 run_loading" href="">option 2</a>
</div><!-- STEP 1 END -->
<div id="step4m" class="step4 marker_show">
<div id="stepend" class="show_end">
<div id="proceed">
<div id="if_one">
<a id="agree1" class="step_button" href="http://link1.com">Continue</a>
</div>
<div id="if_two">
<a id="agree2" class="step_button" href="http://link2.com">Continue</a>
</div>
</div>
</div>
</div><!-- STEP 4 END -->
The Javascript:
$(document).on('click', '.run_loading', function (e) {
e.preventDefault();
$(this).parent().hide().next().fadeIn();
$('.step4 .loading').show();
run_loading_run_1('2500');
run_loading_run_4('2500',q1);
});
UPDATE: JSFiddle
How do I do this?

You want
.nextAll('#step4m:first')
However, since IDs must be unique, you could also just write $('#step4m').

Toggle a repeated class in jQuery

I have this HTML code:
<div id="content">
<div class="profile_photo">
<img style="float:left;margin-right:7px;" src="http://gravatar.com/avatar/53566ac91a169b353a78b329bdd35c95?s=50&d=identicon" class="profile_img" alt="{username}"/>
</div>
<div class="container" id="status-#">
<div class="message">
<span class="username">{username} Debugr Rocks!
</div>
<div class="info">24-oct-2010, 14:05 GMT · Comment (5) · Flag · Via Twitter
</div>
<div class="comment_container">
<div class="profile_photo">
<img style="float:left;margin-right:7px;" src="http://gravatar.com/avatar/53566ac91a169b353a78b329bdd35c95?s=32&d=identicon" class="profile_img" alt="{username}"/>
</div>
<div class="comment_message">
<span class="username">{username}</span> Debugr Rocks! XD
</div>
<div class="comment_info">24-oct-2010</div>
</div>
</div>
<div class="profile_photo">
<img style="float:left;margin-right:7px;" src="http://gravatar.com/avatar/53566ac91a169b353a78b329bdd35c95?s=50&d=identicon" class="profile_img" alt="{username}"/>
</div>
That is repeated two or more times. What I want to do, is to when I click the "Comments (5)" link, the class "comment_container" appears, but only the one in the same "container" class.
It's this possible?

You can use .closest() to go up to the .container then .find() to look inside it, like this:
$(".toggle_comment").click(function() {
$(this).closest(".container").find(".comment_container").show();
});
You can try it here, if you're curious about finding other things relative to this here's a full list of the Tree Traversal functions.
As an aside, there's an error in your HTML that needs correcting, this:
<span class="username">{username} Debugr Rocks! </div>
Should be:
<span class="username">{username} Debugr Rocks! </span>