Javascript

Front 1

Argument

Back 1

The values you provide (or pass in) to a function.

Hint 1

P and Q

Front 2

Array

Back 2

A data structure that allows you to store and access a sequence of values.

Front 3

Boolean

Back 3

A data structure that represents true or false.

Front 4

(CSS) Cascading Style Sheets

Back 4

A styling language used primarily for changing how the content in your HTML page looks.

Front 5

Closure

Back 5

An inner function that has access to an outer function's variables (in addition to its own and any global variables.

Hint 5

Your relationship

Front 6

Comments

Back 6

Human readable text (often separated by // or /* and */ characters) in your code that is completely ignored by JavaScript.

Front 7

Developer Tools

Back 7

In the context of browsers, they are extentions that help you inspect, debug, and diagnose what is going on inside your web page.

Front 8

Event Bubbling

Back 8

The phase where an event starts at the element that initiated the event and climbs the DOM back to the root.

Front 9

(DOM) Document Object Model

Back 9

The JavaScript representation (often in a tree-like structure) of your HTML page and all the things inside it.

Front 10

Event Capturing

Back 10

The phase where an event starts at the root and transverses down the DOM until it reaches the element that initiated the event.

Front 11

Event Listener

Back 11

A function that listens for an event and then executes some code when that event is overheard.

Front 12

Event Target

Back 12

The element that is responsible for having initiated (aka fired) and event.

Front 13

Event

Back 13

A signal that travels through your DOM to indicate something has happened.

Front 14

For Loop

Back 14

A control statement that executes some code a finite number of times.

Front 15

Function

Back 15

A reusable block of code that takes arguments, groups statements together, and can be called on to execute the code contained inside it.

Front 16

Global Scope

Back 16

Something declared outside of a function that is accessible to the entire app.

Front 17

If Statement

Back 17

A conditional statement that executes some code if the condition is true.

Front 18

If/Else Statement

Back 18

A conditional statement that executes different pieces of code depending on whether a condition is true or false

Front 19

(IIFE) Immediately Invoked Function Expression

Back 19

A way of writing JavaScript that allows you to execute some code in its own scope without leaving behind any trace of its existence.

Hint 19

Sneakey

Front 20

Invoke

Back 20

A fancy way of saying the same thing as calling a function.

Front 21

Javascript

Back 21

A fussy and (often) inconsistent scripting language that, to everyone's surprise over the years, has grown to be quite popular for building apps on the web and the server.

Front 22

Local Scope

Back 22

Something that is accessible only to the enclosing function or block.

Front 23

Loop

Back 23

A control statement that allows you to execute code repeatedly.

Front 24

Node

Back 24

A generic name for an item in the DOM.

Front 25

Object

Back 25

A very flexible and ubiquitous data structure you can use to store properties and their values and...even other objects.

Front 26

Operators

Back 26

A built-in function such as +, -, *, /, for, while, if, do, =, etc. words.

Front 27

Primitives

Back 27

A basic type that isn't composed of other types.

Front 28

Return

Back 28

A keyword that exits a function or block. In the case of functions, it is often used to return some data back to whatever called the function.

Hint 28

What's the word?

Front 29

Scope

Back 29

A term indicating the visibility of something.

Front 30

Strict Equality (===) Comparison

Back 30

Checks whether value and type of two things is equal.

Front 31

Strict Inequality (!==) Comparison

Back 31

Checks whether the value and type of two things is not equal.

Front 32

String

Back 32

A sequence of characters that make up what we think of as text. It is also the name of a formal type for dealing with text in JavaScript.

Front 33

Switch Statement

Back 33

A conditional statement that checks a particular condition against a list of cases. If one of the cases matches the condition, the code associated with that case executes.

Front 34

Timer Functions

Back 34

Functions that executes code at a periodic interval. The most common timer functions are setTimeOut, setInterval, and requestAnimationFrame.

Front 35

Type

Back 35

A classification that helps identify your data and the values you can use.

Front 36

Values

Back 36

The formal name for the various types of data you'll encounter.

Front 37

Variable Scope

Back 37

The term for describing the visibility of a variable in a section of code.

Front 38

Variables

Back 38

A named bucket for storing data.

Front 39

Weak Equality (==) Comparison

Back 39

Checks only whether the value of two things is equal.

Front 40

Weak Inequality (!=) Comparison

Back 40

Checks only whether the value of two things is unequal.

Front 41

Web Browser

Back 41

A complex application that, at its bare minimum, helps you browse the internet and display web pages.

Front 42

While Loop

Back 42

A control statement that continually executes some code until a condition you specify returns false.

Front 43

CLI

Back 43

Command line Interface. A direct line of communication between the developers and the operating system they're working on.

Front 44

ls

Back 44

List directory contents.

Front 45

ls -al

Back 45

List a detailed directory of the contents, including hidden files.

Front 46

cd

Back 46

Change directories.

Front 47

cd ../

Back 47

To move up (backwards) one directory.

Front 48

cd ~

Back 48

Brings you back to the home directory.

Front 49

cd /

Back 49

To move to the root directory of your machine.

Front 50

cd -

Back 50

To move to the last directory you were in.

Front 51

pwd

Back 51

To show the current directory you are in.

Front 52

cp and formula

Back 52

To copy a file from one place to another. cp /path/to/existing/file.txt /path/to/new/location

Front 53

cp -r and formula

Back 53

To recursively copy a directory from one location to another. cp -r /path/to/existing/folder/ /path/to/new/location

Front 54

mv and formula

Back 54

To move a file from one place to another. mv /path/to/existing/folder /path/to/new/location

Front 55

mv -r and formula

Back 55

To recursively move a folder from one location to another. mv -r /path/to/existing/folder /path/to/new/location

Front 56

man <any command>

Back 56

To see the instruction manual for any command.

Front 57

mkdir <directory_name>

Back 57

To create a new directory.

Front 58

rm <file_name>

Back 58

To delete (remove) a file.

Front 59

rm </path/to/file_name>

Back 59

To delete a file from a different directory.

Front 60

rm -r <directory_name>

Back 60

To delete a directory and all its contents recursively.

Front 61

What kind of language is Java? What does it mean?

Back 61

Java is an object oriented programming language. Everything happens in a class.

Front 62

What is a class in Java?

Back 62

Consists of a group of related methods and variables lumped together under one name.

Front 63

What is a string?

Back 63

Anything that is written inside two quotation marks.

Front 64

Where do you put a semicolon?

Back 64

With exception of lines that either begin or end with {}, every line in Java must end with a semicolon.

Front 65

What does float mean?

Back 65

Floating decimal point. Any number that has a decimal in it.

Front 66

What does double mean?

Back 66

Floating decimal point. Any number that has a decimal in it.

Front 67

What does static mean?

Back 67

A method or a variable that is not attached to a particular object, but rather to the class as a whole.

Front 68

What does char mean? How many are allowed?

Back 68

Character. One character.

Front 69

What does str mean?

Back 69

String. You must use "" instead of ''. You can put any characters, as long as they're in the parentheses.

Front 70

What kind of data types are int, double, boolean and char?

Back 70

Primitive, meaning they are not changeable.

Front 71

What does sum do?

Back 71

It adds everything. It doesn't necessarily have to be addition.

Front 72

What integer would you get for double u = z / y; assuming z and y are both integers?

Back 72

8.0, not 8.14 because z and y are both integers, so Java is going to assume you want the answer in the form of an integer.

Front 73

If y is an int and z is a double, would your answer be an integer or an irrational number?

Back 73

Irrational number. If one thing is double, then everything is double.

Front 74

What primitive needs to be used for exponents?

Back 74

Double.

Front 75

How do you make an exponent?

Back 75

double (whatever) = Math.pow(x, y);

Front 76

What is the answer and why?

int x = 5;

int y = 7;

int z = 57;

double u = x * z;

double d = Math.pow(x, y);

System.out.println(d);

Back 76

78125.0 it's only giving you the answer for d because it's the only answer you asked for.

Front 77

What is typecasting?

Back 77

When you want to change a variable (int to double, for example), but instead of changing the original declaration, you change it in the line.

Front 78

What is the answer and why?

int x = 5;

int y = 7;

int z = 57;

double u = x / (double)y;

System.out.println(u);

Back 78

0.714285 because y has been typecasted.

Front 79

%

Back 79

Modulus. Or remander.

Front 80

What's the answer and why?

int x = 56 % 5;

System.out.println(x);

Back 80

1 because the % only gives you the remainder, not the quotient.

Front 81

How do you create a new file in vim? The formula.

Back 81

vim file_name.txt

Front 82

While in vim, what letter do you type that allows you to start typing? What's the mode called?

Back 82

i insert mode

Front 83

In vim, how do you leave insert mode?

Back 83

Esc key

Front 84

In vim, how do you enter command mode?

Back 84

:

Front 85

What key saves the file you made in command mode?

Back 85

w

Front 86

What key exits vim?

Back 86

q

Front 87

How do you print the contents of a file to a screen?

Back 87

cat file_name.txt

Front 88

The main method formula

Back 88

public static void main(String[] args){

// code to execute here

}

Front 89

What does public mean in the main method?

Back 89

It's the access modifier. It tells the JVM that this method is publicly accessible by any other method or service that has access to this file.

Front 90

What does static mean in the main method?

Back 90

It's a keyword. It means this method can be invoked without the use of an object.

Front 91

What does void mean in the main method?

Back 91

It means this method doesn't return a value.

Front 92

What does main mean in in the main method?

Back 92

This is where the name of the method goes.

Front 93

What does (String[] args) mean in the main method?

Back 93

This means that the main method requires an array of strings called args.

Front 94

What does JVM stand for?

Back 94

Java Virtual Machine