Angular Interview Practice Exam 2025 - Free Angular Practice Questions and Study Guide

The method setAttribute() in the DOM is designed to modify or set the value of a specified attribute on a particular element. When you utilize setAttribute(), you can either change the value of an existing attribute or add a new attribute if it does not already exist on the element. This versatility is crucial for dynamically changing the properties of elements based on user interaction or other conditions in your application.

For example, if you have an element like an image, you can use setAttribute() to change its 'src' attribute to point to a new image source or adjust the 'alt' attribute to provide a new descriptive text. This method enhances the interactivity and responsiveness of web applications since it allows for real-time manipulations of the document's structure and attributes.

In contrast, other options do not align with the functionality of setAttribute(). Removing an attribute is accomplished with removeAttribute(), creating a new element would typically involve document.createElement(), and retrieving an element is done through methods like getElementById or querySelector. Understanding this method's function helps in managing and manipulating the DOM effectively in Angular or any web development context.