What are the attribute of an element?

Get Input Value in JavaScript

Use the querySelector method to get an element by data attribute, e.g. document. querySelector(‘[data-id=”box1″]’) . The querySelector method returns the first element that matches the provided selector or null if no element matches the selector in the document.

Attributes define additional characteristics or properties of the element such as width and height of an image . Attributes are always specified in the start tag (or opening tag) and usually consists of name/value pairs like name=”value” . Attribute values should always be enclosed in quotation marks.

The Document method querySelectorAll() returns a static (not live) NodeList representing a list of the document’s elements that match the specified group of selectors .

The [attribute^=”value”] selector is used to select elements with the specified attribute, whose value starts with the specified value. The following example selects all elements with a class attribute value that starts with “top”: Note: The value does not have to be a whole word!

HTML DOM getAttribute() method is used to get the value of the attribute of the element. By specifying the name of the attribute, it can get the value of that element. To get the values from non-standard attributes, we can use the getAttribute() method.