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JAVA SCRIPT

JAVA SCRIPT

memorize.aimemorize.ai (lvl 286)
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17 cards
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Section 1

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undefined

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JavaScriptWeb Dev
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Last updated

6 years ago

Date created

Mar 1, 2020

Cards (17)

Section 1

(17 cards)

undefined

Front

refers to the "absence of value".

Back

null

Front

null refers to the "value of nothing

Back

what is programming language ?

Front

Programming languages are used to communicate instructions to a machine and JAVA script is programming language

Back

NaN

Front

stands for "Not-A-Number" and it's often returned indicating an error with number operations

Back

Strict equality

Front

===

Back

string concatenation

Front

Combining several strings into a single string, or combining a string with other data into a new, longer string.

Back

HTML and CSS are markup languages.what does it mean ?

Front

Markup languages are used to describe and define elements within a document

Back

How to declare a string in java script ?

Front

It is correct to either use double " or single ' quotes with strings

Back

strongly typed language

Front

a language in which all variables must be declared before they can be used.

Back

ternary operator

Front

conditional ? (if condition is true) : (if condition is false)

Back

control flow

Front

The order in which statements are evaluated and executed

Back

how is the naming convention for create a variable in javaScript ?

Front

using camelCase

Back

what if you want to use quotes in a string?

Front

e

Back

Truthy values

Front

all values other than the six falsy values; truthy values are treated in comparison operation as the Boolean value true.

Back

falsy values

Front

false, null, 0, "", undefined, and NaN

Back

JavaScript is loosely typed

Front

you don't need to specify data types

Back

Falsy values

Front

A value is falsy if it converts to false when evaluated in a boolean context

Back