LOVE 2017



PRESENTER


DON BURKS   

@don_burks   
Head Instructor
Lighthouse Labs
https://donburks.com

TWO "SHORT" LESSONS THIS MORNING


LESSON #1

OVERVIEW + HTML



LESSON #2

CSS



LESSON #1

OVERVIEW + HTML





What is coding?

And what does it mean to be a coder?

CODING IN THE MOVIES...



IT'S NOT LIKE THIS.





CODING IN REAL LIFE...


* - Actual things do not fly out of the screen.
Sorry.

SO, WHAT IS CODING?


The art of solving a problem 

with steps

so simple that even

a computer can do them.



Where does HTML come in?

How does it compare to CSS ?



START 


WITH 


CONTENT



THEN ADD CONTEXT




HTML is the structure of your content.


It gives context to your content.

WHEN YOU BUILD A HOUSE...



CSS is appearance


TOO MUCH CSS



choose your flavour






How does HTML work?

<>


These are called angle brackets

Text inside of angle brackets is an HTML tag.


Everything else is just  text.




<p>This is normal text surrounded by an HTML tag .</p>


A closing tag has a  forward slash.


This whole thing is an HTML element.

Let's LOOK AT SOME CODE

<h1>Don Burks</h1>
            
<section>
            
  <p><em>Bio:</em> Head Instructor of Lighthouse Labs</p>

  <p><em>E-mail:</em> don@lighthouselabs.ca</p>

</section>

<h1> : Defines a heading on the page.

<section> :  Creates a section of related content.

<em>: Emphasizes text.

<p> : Creates a paragraph of text.




There are many types of HTML elements, including:
<SECTION>, <HEADER>, <STRONG>, <FOOTER>
EACH ELEMENT HAS ITS OWN SPECIFIC ROLE


OK
We've learned about tags and elements.

What's next?

NESTING



Nesting


Placing an HTML element inside another HTML element. 

Previously, we saw <em> tags inside our <p> tag. 

Nesting shapes how the resulting web page is structured.

This gives context to our content.


How do we write code?

Why don't we just code in Microsoft Word?





LEt's take a look at ATOM

What does HTML look like inside  a code editor?





Attributes


Attributes give elements superpowers additional information.


Attributes


Attributes are placed inside an element's opening tag.

They are placed after the tag's name.

They are structured as follows:  attribute="value"

ATTRIBUTE EXAMPLE



Here's a normal header element: 

<header>I'm a sentence.</header>

Here's a header element with a title attribute:

<header  title="My Cool Header">I'm a sentence.</header>

SRC Attribute


The  src  attribute is how we get  CAT PICTURES

Used within the  < img > element

<img  src=" http://images.com/cute_kitteh.jpg" /> 


ALT-Ernate FACTS


If we add the alt attribute to our images,

Then we are providing an alternative

For when they cannot be displayed.

<img  src=" http://images.com/cute_kitteh.jpg" alt="kitten!"> 

let's change gears




LESSON #2

css

HTML defines the elements on a webpage
CSS defines the design of those elements. 


Structure: Remember our house's scaffolding?

Defining block of content that should go within another block, etc. 


Design: Our house's paint and decor. 

How those blocks should actually look:
what colour they are,  how big they are, etc.

browsers already have css



When we loaded our content earlier through

Atom, we saw the browser 

making our content appear differently, 

based on the tags we used.


CSS is a two-step process


1. It targets an element on a page.


2. It applies styles ("properties") to it.


Common CSS properties include:

color, font-size, text-align

NOW LET'S CREATE THE CSS


CSS consists of rules. CSS rules are simple:

                              header  {
                                 color: green;
                              }

Just like with HTML attributes, we simply 
assign values to properties.

DIVING DEEPER INTO THE CSS


header  { <---- Opening curly bracket.
       text-align: center; <---- We use ":" instead of "=".
       color: green; <---- We don't put the value inside quotes.
}  <---- Closing curly bracket.

em  { <---- We're targeting an element created with <em> tags.
       font-size: 20px; <---- Then we're telling CSS how to style the font-size property.
       color: blue; <---- This changes the text colour.
}

We place groups of CSS rules between curly brackets.



To assign CSS properties to a specific HTML element, we must have a way of referencing that specific element.

Done by using an HTML attribute that assigns it a unique name.  The attribute that does this is called "ID".


What does an ID do?


how do you Add an id?




Let's add an ID to our sample HTML 

code in Atom.

okay, what about in css?

When we start a selector with a pound-sign,

we tell CSS to target elements with a given id:


#bio  {
       font-size: 20px;
       color: blue;
}

ID vs class attribute


Use class instead of id when 
you have more than one element
that shares those properties

An id should be unique to the page
Only use it on one-of-a-kind elements

A class should be used more frequently



how do we visualize classes?



class attribute


Instead of # symbol, we use a . (period) symbol 

             .special  {
                 color: tomato;
             }

This will target the following element:

             <li  class="special">Text here</li>



What else can you do with css?


CSS3

stylistic control

Gradients
Linear
Radial
Repeating Linear
Repeating Radial

Animations


deadly when
used in combination
with html5 & css3


Example:

without js we wouldn't have ...


OR

OR




What ELSE CAN
WE DO WITH
 Web Technologies?






not just for the web 

anymore!



Desktop Apps!



Atom
              


Built with HTML, CSS, & JS!
























"WHy should
We learn to
code?"

The best way to learn is:


tinker


&


Build stuff



IT'S NORMAL TO ENCOUNTER BUGS.

Debugging is a natural part of writing code.

Ask your mentors for help! That's why they're here :)

Also: Developers look stuff up ALL the time. #thxgoogle

RUBBER DUCK DEBUGGING




PAIR UP!


We encourage Pair Programming. 

dear attendees,




Thank you!



kind regards,

DON BURKS

LOVE - Dec 2, 2017

By Don Burks

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LOVE - Dec 2, 2017

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