How do I find an element by class name?

How do I find an element by class name?

The getElementsByClassName() method returns a collection of all elements in the document with the specified class name, as an HTMLCollection object. The HTMLCollection object represents a collection of nodes. The nodes can be accessed by index numbers.

How do you select an element with class name example?

To select elements by a given class name, you use the getElementsByClassName() method:

1. let elements = document.getElementsByClassName(‘className’);
2. JavaScript getElementsByClassName() example

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How do I get the class of an element in HTML?

HTML DOM className Property

1. Set the class for a element with id=”myDIV”:
2. Get the class name of the first element in the document (if any):
3. Other examples on how to get the class name of an element:
4. Get the class names of an element with multiple classes:
5. Overwriting an existing class name with a new one:

What is className in HTML?

In the HTML document, the className property is used to set or return the value of an element’s class attribute. Using this property, the user can change the class of an element to the desired class.

Can you get element by class?

The getElementsByClassName method of Document interface returns an array-like object of all child elements which have all of the given class name(s). You may also call getElementsByClassName() on any element; it will return only elements which are descendants of the specified root element with the given class name(s).

Is there a get element by class?

In JavaScript, you use the getElementsByClassName() method to select elements based on their classes. The getElementsByClassName() method is available on the document object and any HTML element.

What are elements class 9?

An element is a substance which cannot be spilt up into two or simpler substances by the means of chemical methods of applying heat, light or electric energy. For Example: – Hydrogen is an element which cannot be split into two or more simpler substances.

What is the difference between classList and className?

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).

Can I use getElementsByClassName in react?

Probably you should use getElementsByClassName instead of getElementByClassName . And DO NOT forget getElementsByClassName returns an array-like obj HTMLCollection, so picking the first element is necessary. React. render( <CommentBox url=”data/comments.</p>

How do you traverse HTMLCollection?

HTMLCollection for Loop

1. Method 1: Using the for/of loop: The for/of loop is used to loop over values of an iterable object. This includes arrays, strings, nodeLists, and HTMLCollections.
2. Method 2: Using the Array.from() method to convert the HTMLCollection to an Array. The Array.
3. Method 3: Using a normal for loop.

How to select elements by class in Internet Explorer?

If you want to select elements by class and don’t want to use a library, you simply have to loop through all elements in the page and check for the class in their className property. Internet Explorer 8 and older does not support getElementsByClassName ().

What does getelements byclassname do in elements?

elements is a live HTMLCollection of found elements. names is a string representing the list of class names to match; class names are separated by whitespace getElementsByClassName can be called on any element, not only on the document. The element on which it is called will be used as the root of the search.

How to call document.getelementsbyclassname ( names ) in HTML?

var elements = document.getElementsByClassName(names); // or: var elements = rootElement.getElementsByClassName(names); elements is a live HTMLCollection of found elements. getElementsByClassName can be called on any element, not only on the document. The element on which it is called will be used as the root of the search.

How to get the names of the elements in HTML?

var elements = document.getElementsByClassName(names); var elements = rootElement.getElementsByClassName(names); elements is a live HTMLCollection of found elements. names is a string representing the class name (s) to match; multiple class names are separated by whitespace