What is a website?

What is client-side development?

What elements constitute a website?

How do you manipulate visual properties?

faculty.washington.edu/mikefree/info343/lectures/html-css

Are we on the same page?

Let's get started

Client-side web development

Client-side web development

protocol

hostname

path

protocol

hostname

path

{how to handle the information}

protocol

hostname

path

{who has the information}

Web server

protocol

hostname

path

{where is the information}

Web server

These files contain code rendered by your browser

(we're going to create them in this course)

{let's start now}

protocol

path

hostname?

Run a local server

Navigate to your desktop

spotlight search: command + space, then type "terminal"

Start a simple HTTP server using python

python -m SimpleHTTPServer 8080

Open your terminal

cd Desktop

Access your file at localhost:8080/test.html

What elements constitute a website?

HTML

  • HyperText Markup Language

  • Uses <tags> to describe rendering

  • Organize content into a tree structure

Common HTML elements

  • <div>: Division of a page
  • <text>: A piece of text
  • <ul>: An unordered list
  • <li>: A list element
  • <svg>: Scalable Vector Graphic
  • <circle>: A circle...
  • <rect>: A rectangle...

All you have to do is learn how to arrange these elements on a page

{for now}

Basic page anatomy

<!DOCTYPE html>
<!-- Start HTML, in english -->
<html lang="en">

    <!-- Head section: set meta content, read in files -->
    <head>
        <!-- Declare UTF-8 encoding -->
        <meta charset="UTF-8">

         <!-- Set title -->     
        <title>My Title</title>

        <!-- Link to a style file -->
        <link rel="stylesheet" href="css/main.css"/>
    </head>
    
    <!-- Body of page: where content goes -->
    <body>
    </body>
</html>

How do you manipulate visual properties?

{attributes}

Attributes

  • Define representation and behavior

  • Assign within the tag

  • Assign an id for reference, styling

  • Assign a class for grouping, styling

<text id="title-text" class="big">My Title</text>

{practice for later, solution}

Built-in capabilities

Forms!

What's the HTML <tag> for a form?

How could you get input from a user?

<form>....</form>
<input id="input1">....</input>

Add a label to your input

<label for="input1">My Label Text</input>

How (else) do you manipulate visual properties?

{style}

Style

We don't want this...

... or this....

We want this....

... made by this.

Defining styles of HTML elements

What sorts of styles?

Size

Layout

Font

Background

Color

Opacity

Cascading Style Sheets

Cascading Style Sheets

Recall HTML tree structure

<div id="container">
    <div id="sub-div">
        <p id="block">
            <text>Text1</text>
            <text>Text2</text>
            <text>Text3</text>
        </p>
    </div>
</div>

Styles applied in a cascade

<div id="container">
    <div id="sub-div"> // Has own styles + #container styles
        <p id="block"> // Own styles + #sub-div + #container
            <text>Text1</text> // styles + #block + #sub-div + #container
            <text>Text2</text>
            <text>Text3</text>
        </p>
    </div>
</div>

Defining styles

Inline with HTML elements

<div style="font-size:30px">Text goes here</div>

Style section in HTML code

<html>
    <style>
        **** CSS syntax goes here ****
    </style>
</html>

Include from a separate file

<html>
    <link rel="stylesheet" href="css/my-css.css"/>
</html>

Assignment

Git challenge (due before next class)

html-css

By Michael Freeman

html-css

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