1. Web Programming and Design
MPT Senior Cycle
Tutor: Tamara
Week 3

2. Plan for the next 4 weeks:
Introduction to HTML tags, creating our template file
Introduction to CSS and style
Introduction to JavaScript
More advanced JavaScript
Portfolio Site

3. Web Design Competition
There will be a competition for the best designed website!!
Theme: “Your Hero”
To enter: Simply upload your website into a folder named competition on your Public_html
Have your theme picked for next week - bring content with you!

4. <tagname>Some Content in here….</tagname>
HTML Reminder
HTML stands for Hyper Text Markup Language
HTML allows us to describe and define the structure of our website using markup
All the elements in a web page are represented in tags <tag>
Example of HTML elements include: headings, paragraphs, images, videos
Nearly all HTML tags come in pairs with an start and end tag <tag> </tag>
The Browser will not display these tags, instead it will use the tags to render the web page
<tagname>Some Content in here….</tagname>
Defines the type of element
The stuff that gets displayed
Close off the element

5. h1 {color: blue;} What is CSS? Selector (HTML tag) Property Value
CSS stands for Cascading Style Sheets
CSS describes how HTML elements are to be displayed on screen
It allows us to change the style or appearance of our web page
CSS contains a selector and property, value pair
The selector is the HTML tag you would like to style
h1 {color: blue;}
In this example, all the h1 tags in the HTML document will be changed to blue
Selector (HTML tag)
Property
Value

6. Programming Basics With JavaScript

7. Where to write our JavaScript
Just like CSS, we can write our JavaScript code in more than one place.
We can write our JavaScript code in our HTML file, as long as it is contained within <script></script> tags
We can also write our code into a separate file with a .js file extension and link it to our HTML in the head

8. Strings: “Hello MPT Class”
Data Types
In all programming languages, knowing the data type is very important
If you know the data type, you will be able to perform the correct “Operation”
There are loads of data types!
The most common are numbers, strings, booleans, arrays, objects
The ones we will look at today are:
Numbers: 1, 2, 3, 4.5, 6.2, 9.3
Strings: “Hello MPT Class”
Booleans: True, False

9. var x; x = 1; var a = 4 + 8.5; var b = a - x; Variables
You can also declare your variable and assign a value to the variable later on in your code
Or your variable can be the value of an expression
var x;
x = 1;
Note: we did not use the word var again. We only need to use var once when declaring a variable
Always finish every line with a ;
var a = ;
var b = a - x;

10. Operations Operator Description + Addition - Subtraction *
We can perform an operation on these Data Types, just like in arithmetic
Operator + - * / % ++ --
Description
Addition
Subtraction
Multiplication
Division
Modulus
Increment
Decrement
Remainder

11. JavaScript Events
HTML events are "things" that happen to HTML elements. Events can be caused by the user or by the browser. JavaScript can "react" to these events.
Event Description onchange An HTML element has been changed onclick The user clicks an HTML element onmouseover The user moves the mouse over an HTML element onmouseout The user moves the mouse away from an HTML element onkeydown The user pushes a keyboard key onload The browser has finished loading the page

12. function myFunction(argument){ Code goes here…….. }
Function Syntax
function myFunction(argument){
Code goes here…….. }
We have to use the special keyword function
Using arguments is optional
All code needs to be contained in { }

13. document.getElementById(“idName”)
JavaScript DOM
To make these changes we use the Document Object Model
This allows us to select HTML tags by their id or class name
document.getElementById(“idName”)
document.getElementsByClassName(“className”)

14. JavaScript DOM document.getElementById("myH1").style.color = "red";
We can use the DOM model to change style and change the content within HTML tags
We can also add HTML to the inside of HTMl tags
document.getElementById("myH1").style.color = "red";
document.getElementById(“myH1”).innerHTML = “New Heading”;

16. JavaScript for loop syntax
To create a for loop we must use the keyword for
Then we setup three statements within ( ) before describing the block of code we want to repeat
Statement statement statement all separated by ;
for (setup var; condition; increase var){
// block of code to repeat }
Keyword for

20. Important Links https://www.w3schools.com/js/js_operators.asp
Data types and operators:
JavaScript DOM