The HTML id attribute is used to specify a unique id for an HTML element. You cannot have more than one element with the same id in an HTML document.

Nov 6, 2025 · The purpose of the ID attribute is to identify a single element when linking (using a fragment identifier), scripting, or styling (with CSS). You can access elements with ID …

Jul 11, 2025 · HTML id attribute provides a unique identifier for an element within a document. It allows targeted selection and manipulation of the element through CSS and JavaScript, …

The id attribute defines a unique identifier for an HTML element. It is commonly used to point to a style in a style sheet, as well as anchor links and targets for scripts.

An HTML id is an attribute that can be added to an HTML element to give it a unique identifier. It is used in CSS or JavaScript to select and style the element, or to add behavior to it with …

HTML id attribute is used to uniquely identify an element within an HTML document, allowing for targeted styling, scripting, and linking.

Definition and Usage The id attribute specifies a unique id for an HTML element (the value must be unique within the HTML document). The id attribute is most used to point to a style in a …

The “id” attribute defines a unique identifier for HTML elements. In this snippet, you can find out, which are its valid values for HTML, CSS, and Javascript.

Feb 8, 2023 · This ID is valid in HTML 5 But in CSS, javaScript identifiers (including element names, classes, and IDs in selectors) can contain only the characters [a-zA-Z0-9].

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