Angular Interview Practice

Accessing a custom data-* attribute in the DOM can effectively be done using the dataset property. When you use the dataset property, it allows for easy access to all data-* attributes of an element as properties of the dataset object. For example, if an element has a custom attribute like data-user-id, you can access it using element.dataset.userId. This method is convenient and utilizes the standardized approach introduced in HTML5 for managing these types of attributes.

Using the dataset property also benefits from automatic conversion of kebab-case names into camelCase in JavaScript, making it straightforward to reference these attributes without the need for converting the case manually. This enhances code readability and maintains clarity further when working with multiple custom attributes on an element.

Accessing these attributes via the getAttribute() method is valid but less efficient because it requires the exact attribute name with the data prefix, such as getting it with getAttribute("data-user-id"), which adds more complexity when compared to the simpler dataset approach. The style property focuses specifically on CSS styles applied to the element and doesn’t interact with data attributes. Similarly, while elements do have an attributes collection, directly accessing attributes this way is more cumbersome and less common compared to using the dataset property, particularly for custom data attributes