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Get All Elements By Classname And Change Classname

Are you looking to streamline your coding process and make quick changes to multiple elements on a webpage? In this article, we'll dive into the handy technique of getting all elements by classname and changing their class names effortlessly in your code.

When working on web development projects, being able to target specific elements efficiently can save you significant time and effort. Thankfully, JavaScript provides us with a straightforward way to select elements based on their class names.

To get started, let's look at how you can access all elements with a particular class name using the `getElementsByClassName()` method. This method returns a live HTMLCollection object containing all elements that have the specified class name.

Here's a basic example to demonstrate how to get all elements by classname:

Js

const elements = document.getElementsByClassName('yourClassName');

In the code snippet above, replace 'yourClassName' with the actual class name you want to target. The `getElementsByClassName()` method will return all elements that have that specific class name.

Once you have selected the elements you want to work with, you can iterate through them and modify their class names. Let's take a look at how you can change the class names of these elements:

Js

const elements = document.getElementsByClassName('yourClassName');
for (let i = 0; i  {
  element.classList.remove('oldClassName');
  element.classList.add('newClassName');
});

The `querySelectorAll()` method with a CSS selector allows for more flexibility in targeting elements based on specific criteria.

In summary, getting all elements by classname and changing their class names is a powerful technique that can enhance your productivity when working on web development projects. By leveraging JavaScript methods like `getElementsByClassName()` or `querySelectorAll()`, you can efficiently manipulate multiple elements at once, saving time and effort in your coding workflow.

Give this method a try in your next project and experience the convenience of updating class names across multiple elements with ease. Happy coding!

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