Web & Application Development (Chapter 3)

id attribute

identifies a unique area on a webpage and distinguishes it from other page divisions

hyperlinks

allows users to move from one page to another on a website, view a page on another website, start a new email message, download a file, or make a phone call from a mobile device.

href attribute

identifies the webpage, email address, file, telephone number, or other content to access in an anchor tag

JPG/JPEG

a 24-bit image that supports 16.7 million colors; best suited for digital photos and other pictures with a high level of detail or color complexity, such as shadows

optimize a graphic

when using images with large file sizes, a photo or graphics editor can be used to _____ for web use

class attribute

Provide a level of control over the styling or formatting of specific elements on a webpage; it can be named with any word as long as it does not contain spaces.

empty/void tag

HTML elements that are void of content (i.e. <img>, <br>, <hr>)

<dd> and </dd>

tags for each description or definition in a description list

bullet

a small graphic that is displayed in an unordered list before each item of information

pixel

the smallest element of light or color on a device displaying images

src attribute

used to identify the image file being inserted in a webpage

relative links

hyperlinks that link to other webpages within the same website

PNG

not ideal for photographic images, as its lossless compression is not as efficient as that of the JPG format

mailto:

used to link an email address within an anchor tag

tel:+1number

used to link a phone number within an anchor tag

alt text

a brief description of the purpose of an image

lossy compression

used by JPG; made exclusively for digital photos to reduce file size

http://

beginning of the attribute for an absolute link

Heading element

indicates that a new topic is starting and typically identifies or summarizes the topic

fixed layout

webpage layout does not change when the browser window is resized, or the page is displayed at varying resolutions; every element has a predefined height and width

GIF

8-bit files that can display up to 256 colors; not suitable for high-quality pictures or photos because of the small color palette in them; also uses lossless compression

head element

contains information about a webpage, such as a webpage title and the defined character set, not website content.

SVG

used to create shapes such as circles, squares, rectangles, and lines