Angular Interview Test 2025 – 400 Free Practice Questions to Pass the Exam

The dataset property is used to access custom data attributes in HTML elements. Specifically, it allows you to work with data attributes that are prefixed with "data-", such as data-user-id or data-role. These attributes are designed to store extra information that doesn't affect the rendering of the element.

When you use the dataset property in JavaScript, it automatically converts these attributes into a convenient JavaScript object, making it easy to read from and write to these custom attributes. For instance, if you have an element with a data attribute like `data-theme="dark"`, you can access this value through `element.dataset.theme`, which simplifies the process of handling HTML elements with custom data.

This feature is particularly useful in web applications that require dynamic behavior and interactivity, as it allows developers to associate additional information with HTML elements without cluttering the markup with extra classes or IDs.