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memorize.ai (lvl 286)

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JavaScript Web Dev

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Date created

Mar 1, 2020

Cards (31)

Section 1

(31 cards)

Object

Front

Collection of related data

Back

Variables

Front

Little containers for information that live in the computer memory(usernames, passwords, account numbers)

Back

Method to check if a number is an integer

Front

Console.log(number.isInteger(#));

Back

What can you do with Variables?

Front

Create a variable with a descriptive name. Store and update info stored in variable. Reference or "get" info stored in variable

Back

;

Front

end of argument. Like a period

Back

Seven fundamental data types

Front

1.) Number 2.)String 3.) Boolean 4.) Null 5.) Undefined 6.) Symbols 7.) Object

Back

Integer

Front

a whole number, not a fraction Math.ceil() to calculate smallest integer greater or equal to the number that has a decimal

Back

Do you need quotes for numbers?

Front

No

Back

Arithmetic Operators

Front

A character that performs a task in our code

Back

Are variables values?

Front

No, the contain values that represent them with a name

Back

Operator (%)

Front

Remainder

Back

Undefined

Front

this data type is denoted by the keyword Undefined. Also the absence of a value - different than null

Back

Console

Front

A panel that displays important messages, like errors (syntax error)

Back

How to return a random number between 0-50

Front

Math.random()*50

Back

What do Variables do

Front

provide a way of labeling with a descriptive name. Helps make the program more easily understood by all

Back

/ asdf /

Front

Multiple line comment. Will not print

Back

Operator(*)

Front

Multiply

Back

Operator (-)

Front

Subtract

Back

Data Types

Front

Classifications we give to different kinds of data that we use in programming

Back

What 3 Keywords create Variables?

Front

var, let, & const

Back

console.log( )

Front

Will print what is inside the parentheses to the console

Back

What is JavaScript used for

Front

create responsive, interactive elements for webpages. Makes web development easier.

Back

Symbol

Front

Unique Identifiers. Useful for complex coding.

Back

Number

Front

Any number, including decimals

Back

Boolean

Front

Data type only has 2 possible outcomes...True and False

Back

Operator (/)

Front

Divide

Back

Keywords

Front

Words built into JavaScript so the computer will recognize them and treat them specially

Back

Null

Front

Represents the intentional absence of a value and is represented by the keyword Null

Back

Operator (+)

Front

Add

Back

String (Text)

Front

grouping of characters (letters, numbers, spaces, symbols, etc. Surrounded by ' ' or " "

Back

Methods

Front

Actions that we can perform

Back