Angular Interview Practice

Can DOM properties exist without corresponding HTML attributes?

1. Yes, but only for certain elements

2. No, every DOM property corresponds to an HTML attribute

3. Yes, DOM properties can reflect states without attributes

4. No, unless the element is empty

The correct answer is: Yes, DOM properties can reflect states without attributes

DOM properties can indeed exist without corresponding HTML attributes, particularly because some properties represent states or behaviors that are not directly tied to HTML attributes. For instance, properties such as `checked`, `selected`, and `disabled` reflect the current state of elements like checkboxes or options but may not have direct visible attributes in the HTML markup. Moreover, certain properties can be added to the DOM dynamically and might not have a static representation in the HTML. This capability allows developers to manipulate the state of an element in response to user actions without relying exclusively on attributes defined in the markup. Consequently, this shows that the relationship between the DOM and HTML goes beyond a mere one-to-one correlation of attributes to properties. In contrast, not every DOM property requires a defined HTML attribute, hence the correctness of the chosen option that emphasizes the independence of some DOM properties from HTML attributes.