This document outlines an intro to JavaScript fundamentals course, including: - An overview of the instructor and TAs - Learning key JavaScript concepts like variables, functions, if/else statements - Examples of how the web works with clients and servers - A brief history of JavaScript and how it has evolved - Using Repl.it to do hands-on coding challenges

1. Intro to JavaScript: Fundamentals
January 2018
http://bit.ly/introjs-sd
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2. Instructor
Mike McDonald
Bootcamp Graduate
Web Developer
TAs
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3. About you
What's your name?
What brought you here today?
What is your programming experience?
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4. About Thinkful
We train developers and data scientists
through 1x1 mentorship and project-based
learning.
Guaranteed.Guaranteed.
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5. Agenda
Learn key Javascript concepts
Go over assignments
Complete assignments with our support!
Go over answer key
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6. How the web works
Type a URL from a client (e.g. google.com)​
Browser sends an HTTP request asking for specific files
Browser receives those files and renders them as a website
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7. Client/Servers
Client (sends requests)
Frontend Developer
Manages what user sees
Server (sends response)
Backend Developer
Manages what app does
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8. Example: facebook.com
Client Server
Open browser
and navigate to
facebook.com
HTML, CSS, &
Javascrip render
newsfeed
Request
Response
Algorithm
determines
content of feed.
Sends back
HTML, CSS,
Javascript files
Application LogicApplication Logic
Initial requestInitial request
Following responseFollowing response
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9. Example: facebook.com
Client Server
Open browser
and navigate to
facebook.com
HTML, CSS, &
Javascrip render
newsfeed
Request
Response
Algorithm
determines
content of feed.
Sends back
HTML, CSS,
Javascript files
Application LogicApplication Logic
Initial requestInitial request
Following responseFollowing response
We'll be writing Javascript, the code
that the browser uses to run the app
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10. History of Javascript
Written by Brendan Eich in 1995 for Netscape
Initial version written in 10 days
Completely unrelated to Java, but maybe named after it to
draft off its popularity
Over 10 years, became default programming language for
browsers
Continues to evolve under guidance of ECMA International,
with input from top tech companies
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11. Javascript today
Has large community of developers, libraries and
frameworks
Lots of job opportunities
Also the syntax is easier to understand for first-time
developers
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12. Defining a variable with Javascript
var numberOfSheep = 20
Initialize variable
Name of variable
Value of variable
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13. Variable examples
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14. Declaring a function with Javascript
function greet() {
return "Hello world!";
}
Initialize function Name of function
What the function does
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15. Function examples
bit.ly/tf-intro-js
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16. If/Else Statements
go to gas stationkeep driving
if false if true
need gas?
family roadtrip
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17. If/Else Statements
function familyRoadtrip() {
if (needGas == true) {
getGas();
}
else {
keepDriving();
}
}
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18. Comparing Values
== (equal to)
5 == 5 --> true
5 == 6 --> false
!= (not equal to)
5 != 5 --> false
5 != 6 --> true
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19. If/Else Statements and Comparing Values
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20. Parameters within functions
function adder(a, b) {
return a + b;
}
adder(1,2);
Parameters in declaration
Parameters used
within the function
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21. Examples of parameters within functions
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22. Real developers use Google... a lot
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23. Repl.it setup & first steps!
http://bit.ly/tf-intro-js-challenges
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24. Ways to keep learning
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25. Thinkful's free course
HTML, CSS and JavaScript
Unlimited group mentor sessions
Personal Program Manager
Slack Channel
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Thinkful Coding Prep Course
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