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Why does removeClass() not act on the inner element?


By : Amanda Lopez
Date : July 31 2020, 08:00 PM
I hope this helps . The issue is because .closeX is a child of .menu. This means that when you click .closeX the class is removed. However the event bubbles up the DOM to .menu which then adds the class back on again.
To fix this call stopPropagation() on the inner event handler:
code :
$('.menu').click(function() {
  $(this).addClass('openMenu')
})

$('.closeX').click(function(e) {
  e.stopPropagation();
  $('.menu').removeClass('openMenu')
})
.openMenu { background-color: #CCC; }
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<section class="menu">
  Click me to add class
  <div class="closeX">Click me to remove class</div>
</section>


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How can I use Jquery's removeClass on an element that is ajax'd in?


By : user3694318
Date : March 29 2020, 07:55 AM
Hope this helps assume all item in list have class "listItem" and first item also has "highlight" class some thing like text text text
then in your JS try this
code :
$(".highlight").live("keyup",function(e){
  if(e.keyCode==38)//up key 
  {
   $(this).removeClass("highlight");
   $(this).prev(".listItem").addClass("highlight");
   }
  else if(e.keyCode==40)//down key
  {
   $(this).removeClass("highlight");
   $(this).next(".listItem").addClass("highlight");

   } 
});

Dojo - removeClass by identifying div using class not working e.g. query('.lb').removeClass('hide');


By : user2281518
Date : March 29 2020, 07:55 AM
I wish this helpful for you This works: , Your fiddle does not have the same code, in your fiddle you have:
code :
query('.').removeClass('hide');
query('.lb').removeClass('hide');
<div class="lb hide">
    <div class="lbc">test</div>
    <span class="closeBtn">Close</span>
</div>

<div id="lb" class="hide">
    <div class="lbc">test</div>
    <span class="closeBtn">Close</span>
</div>

How to addClass and removeClass with different element on AngularJS?


By : emanueru_95
Date : March 29 2020, 07:55 AM
will be helpful for those in need You can have the buttons set a value in the scope, and then give the elements classes based on the value of that element using ng-class:
code :
<header>
   <button class="open-btn" ng-click="isActive = true">Open</button>
</header>

<nav ng-class="{ 'active': isActive }">
   <button class="close-btn" ng-click="isActive = false">Close</button>
</nav>

JQuery ScrollTop add/removeClass to element


By : wyn bradley
Date : March 29 2020, 07:55 AM
wish helps you When you scroll back up, you probably want to remove the class you've added.
Is this what you're looking for?
code :
$(window).scroll(function () {
    if($(window).scrollTop() <= 600) {
         $('.phone-container').removeClass('phone-container-fixed');
    }
    if ($(window).scrollTop() > 600) {
        $('.phone-container').removeClass('phone-container-fixed-bot');
        $('.phone-container').addClass('phone-container-fixed');
    }

    if ($(window).scrollTop() > 2201) {
        $('.phone-container').removeClass('phone-container-fixed');  
        $('.phone-container').addClass('phone-container-fixed-bot');
    }
});

Should I check if an element hasClass() before I removeClass()?


By : user1631284
Date : March 29 2020, 07:55 AM
this one helps. The call to removeClass() doesn't throw any errors if the class is not present on the element(s), so there really is no need to call hasClass() first. It just causes additional overhead.
When asking about performance though, the calls to getClass() and removeClass() are likely to be fast. It's the repeated lookup of the .message elements in the DOM that will slow things down. So, in case you want to call hasClass() first, it's better not to repeat the element lookup:
code :
function showMessage() {
    const message = $('.message');

    if(message.hasClass('hidden')){
        message.removeClass('hidden');
    }
}
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