Class Name List Javascript

Class Name List Javascript A class element can be characterized by three aspects Kind Getter setter method or field Location Static or instance Visibility Public or private Together they add up to 16 possible combinations To divide the reference more logically and avoid overlapping content the different elements are introduced in detail in different pages

1 I have five HTML li elements Let s say if the 3rd li element has the active class then I want the 1st and 2nd li element to have class complete First remove the class whatever 1st and 2nd li element has then add the class complete If the 3rd li element has class name active then the 4th li element should have half complete class name 4 Answers Sorted by 12 Something like this should work var spans document getElementsByTagName span for var i 0 i spans length i if spans i className xyz spans i style backgroundColor 000 Share Improve this answer Follow answered Oct 17 2011 at 15 42 endyourif

The item method is used to retrieve a class name using the index of the class in the classList If nothing exists at the specified index the method will return null var index myEle classList item 0 This method can come in handy if you need to loop through each of the classes applied to an element

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Class Name List Javascript

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HTML DOM Element classList Property W3Schools

https://www.w3schools.com/jsref/prop_element_classlist.asp
The classList property returns the CSS classnames of an element The classList property returns a DOMTokenList See Also Syntax element classList Return Value Note The classList property is read only but you can use the methods listed below to add toggle or remove CSS classes from the list classList Properties and Methods More Examples

How to Change Element s Class with JavaScript Stack Abuse

https://stackabuse.com/how-to-change-elements-class-with-javascript-classname-and-classlist/
GetElementsByClassName class name returns an HTMLCollection which contains HTML elements whose class names are equal to class name getElementById id name returns a single HTML element whose id is equal to id name getElementsByTagName tag name returns an HTMLCollection of elements with a tag tag name

Javascript Difference between className and classList Stack Overflow

https://stackoverflow.com/questions/69361432/difference-between-classname-and-classlist
5 Answers Sorted by 5 Using classList you can add or remove a class without affecting any others the element may have But if you assign className it will wipe out any existing classes while adding the new one or if you assign an empty string it will wipe out all of them

Document getElementsByClassName method Web APIs MDN MDN Web Docs

https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName
Js getElementsByClassName names Parameters names A string representing the class name s to match multiple class names are separated by whitespace Return value A live HTMLCollection of found elements Examples Get all elements that have a class of test js document getElementsByClassName test

JavaScript className JavaScript Tutorial

https://www.javascripttutorial.net/javascript-dom/javascript-classname/
To get a complete list of classes of an element you just need to access the className property let classes element className Code language JavaScript javascript Because the class is a keyword in JavaScript the name className is used instead of the class Also the class is an HTML attribute

JavaScript is a prototype based language an object s behaviors are specified by its own properties and its prototype s properties However with the addition of classes the creation of hierarchies of objects and the inheritance of properties and their values are much more in line with other object oriented languages such as Java In this section we will demonstrate how objects can be The classList property returns the class names as DOMTokenList array like object You can get each class names from the object using the index as they are appearing in the element For example to get the first class name in the h1 element you can use h1ClassNames 0 The DOMTokenList object is iterable so that you can use any valid looping

To get the class names of a specific HTML Element as List using JavaScript get reference to this HTML element and read the classList property of this HTML Element classList property returns the collection of classes in class attribute as DOMTokenList object In the following example we will get the class names of the HTML Element which is