Salesforce JavaScript Developer Practice Exam

Which of the following is NOT a basic DOM data type?

1. Document

2. Attribute

3. Function

4. Element

The correct answer is: Function

The correct option identifies that a function is not considered a basic DOM data type. In the Document Object Model (DOM), the basic data types include Document, Attribute, and Element. The Document is the root node of the DOM hierarchy that represents the entire HTML or XML document. It provides access to all elements within the document and serves as the entry point for manipulating the content. Attributes are key-value pairs associated with elements in the DOM. They provide additional information about an element, such as ID, class, and other properties. Elements represent the various nodes within the document structure, such as paragraphs, headings, and links. Each element node can have associated attributes and child nodes, forming a tree structure of the document. Functions, while an important concept in JavaScript for performing actions and computations, do not fall under the categories of basic DOM data types. Instead, they are considered a separate construct in JavaScript used to define reusable code blocks or behaviors, which play a vital role in manipulating the DOM but do not represent a structural element within the DOM itself.