What is getElementById () value?

The getElementById() method returns an element with a specified value. The getElementById() method returns null if the element does not exist. The getElementById() method is one of the most common methods in the HTML DOM.

What is the syntax of getElementById ()?

getElementById() is a quick way to access an element. Unlike the querySelector() method, the getElementById() is only available on the document object, not other elements. In this syntax, the id is a string that represents the id of the element to select. The id is case-sensitive.

How does ID work in HTML?

The id attribute specifies a unique id for an HTML element. The value of the id attribute must be unique within the HTML document. The id attribute is used to point to a specific style declaration in a style sheet. It is also used by JavaScript to access and manipulate the element with the specific id.

How does one access a particular HTML tag through JavaScript?

The easiest way to access a single element in the DOM is by its unique ID. We can grab an element by ID with the getElementById() method of the document object. In order to be accessed by ID, the HTML element must have an id attribute. We have a div element with an ID of demo .

What is data id attribute?

The id attribute assigns an identifier to the element. The id allows JavaScript to easily access the element. It is also used to point to a specific id selector in a style sheet. Note: Not all browsers support the element. Consider using a data-* attribute instead.

What are the different ways to access HTML element in JavaScript?

From the DOM, users can access HTML elements in five different ways in JavaScript.

1. Get HTML element by Id.
2. Get HTML element by className.
3. Get HTML element by Name.
4. Get HTML element by tagName.
5. Get HTML element by CSS Selector.