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Learn how to easily locate elements by class attribute in `codeceptJS` using both XPath and CSS selectors. Perfect for testing web applications!
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How to Get an Element By Class Using codeceptJS and WebDriver

When working with automated testing in web applications, one common challenge developers face is locating elements on the page. If you are using codeceptJS with the WebDriver helper, you might be wondering how to get an element by its class attribute. In this guide, we will explore how to efficiently retrieve an element using its class names with the help of XPath and CSS selectors.

Understanding the Problem

Let's say you have an HTML element like this:

[[See Video to Reveal this Text or Code Snippet]]

In this example, you want to extract the value TEST from the <div> by targeting its class attribute, which contains category_label pl-2 pr-2.

Solutions to the Problem

Using XPath to Locate the Element

If the combination of class names (category_label pl-2 pr-2) is unique on the page, the simplest way to get the element is by using XPath. Here’s how you can do it:

[[See Video to Reveal this Text or Code Snippet]]

In your codeceptJS test, this XPath would look like:

[[See Video to Reveal this Text or Code Snippet]]

Utilizing CSS Selectors

Another effective method is to use CSS selectors. This allows you to locate the element based on its class names directly. The syntax for this is as follows:

[[See Video to Reveal this Text or Code Snippet]]

In your test code, the usage would be:

[[See Video to Reveal this Text or Code Snippet]]

Considerations for Dynamic Class Names

What if the class names you are dealing with are not static? If the class attributes are subject to change or if there are multiple elements with the same classes, you will need to identify the element in relation to a parent element or a more specific path.

In such cases, you can define your locator with respect to the hierarchy of elements. For example:

[[See Video to Reveal this Text or Code Snippet]]

Use the contains method in XPath or add additional parent selectors in your CSS selector to narrow down the search. This will help ensure that you are selecting the right element even when class names vary.

Conclusion

Finding elements by class in codeceptJS with WebDriver can be straightforward if you know the right techniques. Whether you use XPath for precise targeting or CSS selectors for a more straightforward syntax, understanding how to locate elements effectively is crucial for successful automation testing.

The key to success here is focusing on uniqueness and the potential for dynamic changes to class names. Always ensure your locators are robust enough to handle any changes in the webpage's structure.

With these strategies in hand, you can confidently extract the necessary element values from your web applications. Happy testing!