difference between "id attribute" and "name attribute. The id is an abbreviation of … relative length). The id attribute specifies a unique "id" for an HTML element (the value must be unique within the HTML document). Well, starting in HTML 4, the concept of the "alt" attribute for images have been expanded to all elements on the page. The identifier must be unique across the page. Found inside – Page 130HTML, CSS, JavaScript, Perl, Python, and PHP Steven M. Schafer. radio reset submit ❑ ❑ ❑ ❑ text ... For example, user agents use the