- Function: It takes a single argument, which is a string representing the unique ID of an element.
- Purpose: It searches the entire DOM tree for the element that has the matching ID attribute.
- Return Value: If a matching element is found, it returns a reference (object) to that element. This reference allows you to manipulate the element’s properties, content, style, and more.
- Behavior: If no element is found with the specified ID, the method returns
null.
Note
This has ‘Element’ in function name, implying the return of a single element