WEB DEVELOPMENT IMMERSIVE HTML & WEB FUNDAMENTALS

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WEB DEVELOPMENT IMMERSIVE

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•  How the Web Works

•  The Development Process •  Separation of Concerns

•  Work Flow Habits

•  Getting to know HTML elements •  Validation

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•  Request/Response

•  Rendering in the browser •  Local / Remote

•  Frontend / Backend Development

HOW THE WEB WORKS

GENERAL ASSEMBLY WEB DEVELOPMENT IMMERSIVE

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CONVERSATION: PASSING HTML, CSS, & JS

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RENDERING IN THE BROWSER

•  _{Each
browser
has
its
own
rendering
engine
to} interpret and display the markup

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RENDERING IN THE BROWSER

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FTP (FILE TRANSFER PROTOCOL)

GENERAL ASSEMBLY INTRODUCTION TO WEB DEVELOPMENT

Things you will need to connect: •  Ftp Address

•  User login •  Password

Should be provided by your host company or server admin.

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Front end (client-side) •  HTML •  CSS •  Javascript DEVELOPMENT Back end (server-side) •  Ruby •  PHP •  Python •  PERL •  C++

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11 WEB DEVELOPMENT IMMERSIVE GENERAL ASSEMBLY

DEVELOPMENT PROCESS

•  Work Cycle •  Planning

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A TYPICAL WEB DEVELOPMENT CYCLE

User-‐Experience

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•  Who is our target audience?

•  How do we know if the user is hitting their goals? •  What are the most important features of this site?

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UX "

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Business Needs User Needs Best PracCces

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UX "

Ideal Experience

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Resulting in deliverables such: •  wireframes

•  flow diagrams •  sitemap

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IA "

A model or blueprint for the site

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IA : The Blueprint"

Sitemaps & Flow Diagrams

Wireframes & Content

Establish ﬂow and order

Deﬁne the user interacCon and ease the handoﬀ process to the creaCve team

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SMALL SITE

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HAND DRAWN

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FUNCTIONAL

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IPHONE

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DESIGN

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DESIGN

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Each wireframe template, becomes a comp template

Homepage

1 column bo8om 2 column top 2 column top 2 column bo8om Blog GENERAL ASSEMBLY WEB DEVELOPMENT IMMERSIVE

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general-‐assembly-‐logo.png

Comps become graphics & real text

General Assembly oﬀers classes, and events at the intersecCon of technology, design, and entrepreneurship. Together with our

members, thought leaders, and seasoned pracCConers, we oﬀer a robust curriculum focused on

Real Text:

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Interacts with database and executes commands acCng as a controller that mediates between the database model and the front end users view.

If we go to www.zappos.com and search for a pair of shoes, the visual display of the images, the price and the green bu8on "Add To Cart" is all part of the front-‐end. Now, when I click "Add To Cart" and this an item is moved to my shopping cart in the

backend there is some logic wri8en that says something like: "The user just clicked a bu8on, so add this item temporarily to the database and remember this item for the user." The backend takes care of the acCons and the direcCons of how and where to store data.

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•  HTML = structure (content) •  CSS = style

•  Javascript = behavior

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SITE ORGANIZATION

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•  Syntax

•  Document Structure •  Content Tags

•  Element Display

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SYNTAX

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33 <html> <head> Document metadata </head> <body> Document contents </body> </html>

BASIC DOCUMENT STRUCTURE

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Heading Elements <h1>Largest Heading</h1> <h2> . . . </h2> <h3> . . . </h3> <h4> . . . </h4> <h5> . . . </h5> CONTENT TAGS

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Text Elements

<p>This is a paragraph</p> <br> (line break)

<hr> (horizontal rule)

<pre>This text is preformatted</pre>

CONTENT TAGS

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Text Elements

Logical Styles

<em>This text is emphasized</em>

<strong>This text is strong</strong>

<code>This is some computer code</code>

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37 <b>bold</b> <i>italic</i> <u>underline</u>  <s>strike through</s> <menu>creates a menu</menu> <center>centers content</center> <applet>creates an applet</applet> <font>font style</font> DEPRECATED TAGS L GENERAL ASSEMBLY WEB DEVELOPMENT IMMERSIVE

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Unordered list <ul> <li>First item</li> <li>Next item</li> </ul> CONTENT TAGS

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39 Ordered list <ol> <li>First item</li> <li>Next item</li> </ol> CONTENT TAGS GENERAL ASSEMBLY WEB DEVELOPMENT IMMERSIVE

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Definition list <dl> <dt>First term</dt> <dd>Definition</dd> <dt>Next term</dt> <dd>Definition</dd> CONTENT TAGS

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•  File Types

•  Resolution & Color Mode •  Compression

•  Attributes

IMAGES

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•  GIF (Graphics Interchange Format)

•  JPG (JPEG) (Joint Photographic Experts Group)

•  PNG (Portable Network Graphic) •  BMP (Bitmap)

•  SVG (Scalable Vector Graphic)

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•  Lossless data compression makes use of data compression algorithms that allows the exact original data to be reconstructed from the compressed data

•  Lossy data compression does not allow the exact original data to be reconstructed from the compressed data.

LOSSY VS LOSSLESS

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•  Lossless compression that simplifies color pallette to reduce file size.

•  Best for sharp edged graphics with smaller range of colors. (ex: text, simple logos, and icons)

•  Not good for complex gradients or millions of colors (ex: photos)

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•  Lossy compression that reduces file size by loss in image fidelity.

•  Best for photographs and paintings of

realistic scenes with smooth variations of tone and many colors.

•  Not as sharp at depicting text, and icons as GIF or PNG.

JPG (JOINT PHOTOGRAPHIC EXPERTS GROUP)

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•  Lossless data compression that was meant to replace GIF.

•  PNG-8 works well with text, icons, and logos with sharp edges and simplified color palettes.

•  Creates much larger file sizes on photos than JPGs.

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•  A higher 24 bit version of PNG. •  Excellent results for images with

transparency, which makes it work well for UI buttons. Good at both sharp edged

simplified palettes and large color range gradients.

•  Will create a larger file size than JPG for photos however.

PNG-24 (PORTABLE NETWORK GRAPHIC 24 BIT)

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•  Left over from the days of oldver vesions os OS2 and Windows, Bitmaps for web use dithering, pattern or noise inclusion to

reduce file size.

•  Good for making retro web 1.0 graphics. •  Not ideal for maintaining clarity in web

images at reasonable file sizes.

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•  Lossless format that can optionally be

defined as vector points instead of pixels allowing scaling.

•  Good for scalable graphics.

•  Has limited support in older versions of Internet Explorer 8 and below.

SVG (SCALABLE VECTOR GRAPHIC)

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There are only 72 pixels per inch on your screen.

•  Web = 71 dpi (ppi)

•  Print Newspaper = 100 dpi (ppi) •  Print Magazine = 300 dpi (ppi)

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Our screens display colors in RGB. •  Web = RGB (Red, Green, Blue)

•  Print = CMYK (Cyan, Magenta, Yellow, Black)

CHOOSING COLOR MODES

GENERAL ASSEMBLY [DATE OF LECTURE] [NAME OF PROGRAM]

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<img src=”myimage.jpg" alt="Alternate Text"

title=”Display Title” width=”800" height=”600" />

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•  Attributes (href, target) •  Relative vs Absolute

•  Types (url, named anchor, mailto)

LINKS

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A named anchor:

<p id="tips">Useful Tips Section</p> 

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<a href="http://www.example.com/">This is an absolute url Link</a>

VS

<a href=”about.html">This is a relative url Link</a> 

Relative urls, link to content inside the same site and provides a file path relative to the relationship between the two files. Whether internal to the site or on an external domain, absolute urls provide the full http url in the file path.

RELATIVE VS ABSOLUTE

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•  Keywords

•  Descriptions

•  OGP (open graph protocol)

META DATA

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Comma seprated list of terms to improve search engine optomization.

content="wikipedia,encyclopedia" />

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Paragraph description of your site page. Google displays first 69 characters of the description in the search results under the site title and url.

DESCRIPTION

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Enables any web page to become a rich object in a social graph.

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W3C VALIDATION

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