Here's all ul tags with .tabItem class: $('ul.tabItem').css({ }); Here's the child action you're attempting: $('ul.tabItem li hr:first-child').css({"transform": "translateY(-12px)"}); $('ul.tabItem li hr:last-child').css({"transform": "translateY(12px)"}); Although just using CSS would be better: Ul.tabItem li hr It simply adds the class, appending it to any which may already be assigned to the elements. Before jQuery version 1.12/2.2, the .addClass() method manipulated the className property of the selected elements, not the class attribute. Once the property was changed, it was the browser that updated jQuery add style to the HTML element using css() method. There are two parameters you have to use with this method. The aim of this example is to show how you can manipulate CSS, add or remove styling from elements in a dynamic manner, made possible by the famous JS library, jQuery.Now jQuery offers reliable With jQuery, it is easy to manipulate the style of elements. jQuery Manipulating CSS.

Familiar syntax: Cheerio implements a subset of core jQuery. Specifically, it does not produce a visual rendering, apply CSS, load external resources,.. Add or remove class(es) from the matched elements, depending on either the class's 

jQuery CSS: Add a class to an element - w3resource

jQuery addClass() Method - W3Schools Add two classes to an element How to add two class names to a specified element. Add classes using a function How to add classes to selected elements using a function. Change the class name of an element How to use addClass() and removeClass() to remove one class name, and add a new class name. How jQuery Add Style to HTML Element and Apply CSS jQuery Add style using css() jQuery add style to the HTML element using css() method. There are two parameters you have to use with this method. The first parameter requires the jQuery selector to specify the id or class of the HTML element and access the element. The second parameter requires property name with its value. .add() | jQuery API Documentation Although the new paragraph has been created and its background color changed, it still does not appear on the page. To place it on the page, we could add one of the insertion methods to the chain. jQuery Get and Set CSS Classes - W3Schools

.css() | jQuery API Documentation When a number is passed as the value, jQuery will convert it to a string and add px to the end of that string. If the property requires units other than px, convert the value to a string and add the appropriate units before calling the method. When using .css() as a setter, jQuery modifies the element's style property. Class Attribute | jQuery API Documentation

jQuery метод .addClass() добавляет один или несколько имен классов для выбранных элементов. Метод может быть также использован в документах XML и формате SVG. Обращаю Ваше внимание, что этот метод не заменяет, а добавляет класс (присоединяет к указанным

jQuery is a useful Javascript framework which simplifies cross browser Javascript development. This post looks at how to check what CSS class an element has with jQuery, and how to add and remove CSS classes from elements. There is a full example of adding, removing and working out if a HTML How to add a class in an element by JavaScript? In your web pages, you may add or

JavaScript · Bootstrap

jQuery .children() vs .find() / Michael Lee 8 Jun 2016