What is element classList?

What is element classList?

The Element. classList is a read-only property that returns a live DOMTokenList collection of the class attributes of the element. This can then be used to manipulate the class list. Using classList is a convenient alternative to accessing an element’s list of classes as a space-delimited string via element.

What is classList?

The classList is a DOMTokenList object that represents the contents of the element’s class attribute. Even though the classList is read-only, but you can manipulate the classes it contains using various methods.

What is classList in Dom?

The classList property returns the class name(s) of an element, as a DOMTokenList object. This property is useful to add, remove and toggle CSS classes on an element. The classList property is read-only, however, you can modify it by using the add() and remove() methods.

What does classList add do?

add() The function which is used for adding one or more classes to the CSS element.

How do you know if a classList contains a class?

To check if an element contains a class, you use the contains() method of the classList property of the element:

1. element.classList.contains(className);
2. const div = document.querySelector(‘.info’); div.classList.contains(‘secondary’); // true.

How do you add multiple classes to a classList?

classList property To add multiple classes, you’ll need to pass each class as a separate parameter to the add method. The same goes if you want to remove multiple classes. You can utilize the spread syntax if you’re willing to store and manipulate your classes in an array.

How does classList toggle work?

toggle() Method. With each click, classList. toggle() will add the CSS class if it does not exist in the classList array and return true . If the CSS class exists, the method will remove the class and return false .

How do I check if a div contains an element?

contains() method checks if an element is inside another, and returns a boolean: true if it is, and false if it’s not.,Call it on the parent element, and pass the element you want to check for in as an argument.

Is DOMTokenList an array?

Or alternatively, you can use DOMTokenList. contains method. The web has classes like DOMStringList and DOMTokenList which are array-like, and have methods named contains with the same semantics as our includes.

What does classList toggle do in JS?

What is the use of the element classlist property?

The Element.classList is a read-only property which returns a live DOMTokenList collection of the class attributes of the element.

What is classlist in JavaScript?

JavaScript JS Array. The classList property returns the class name(s) of an element, as a DOMTokenList object. This property is useful to add, remove and toggle CSS classes on an element. The classList property is read-only, however, you can modify it by using the add() and remove() methods.

How to get class List of an element with jQuery?

How to Get Class List of an Element with jQuery. Topic: JavaScript / jQuery Prev|Next. Answer: Use the jQuery attr() Method. You can simply use the attr() method to get the class list i.e. list of all the classes that are assigned to an element using jQuery. The class names are space separated.

How to remove a list of elements from a class List?

element.classList.remove(…element.classList); This will spread the list items as arguments to the remove method. Since the classList.removemethod can take many arguments, they all are removed and the classListis cleared. Even though it is readable it is not very efficient.