Random, Parse and String Review

How can you convert a string into a decimal number in JavaScript

• parseDecimal()

• parseFloat()

• stringToFloat()

• parseRandom()

What data type does a prompt always return in JavaScript?

• number

• Boolean

• object

• string

What is the purpose of using a prompt in JavaScript

• take input from the user

• create comments in the code

• display messages to the user

• import external modules, such as "prompt sync"

Which method is used to convert a string into an integer in JavaScript?

• parseString()

• parseInt()

• toInt()

• stringTolnt()

What does the const keyword indicate when declaring a variable in JavaScript?

• The value of the variable cannot be changed after initialization

• The value of the variable must be a number value

• The variable can only be accessed by a specific piece of code

• The variable must be changed after initialization

Given the code line below - which statement is true.

const prompt = require("prompt-sync")();

• the require method is used to include external modules/files in a program

• the name prompt, variable name must always be used in the require instance

• the const use will allow the variable prompt to be changed throughout the program

• the option prompt is calling internal code to process information

Which of the following code statement will generate random numbers (integers) in JavaScript

between -10 and 3?

• let random5=Math.floor(Math.random()*14-10)

• let random5=Math.floor(Math.random()*-10+3)

• let random5=Math.floor(-10)Math.random(3)*1

• let random5=Math.floor(Math.random()*14-10

What line of code will generate a random integer number between 4 and 15, including those values

• let random2=Math.floor(Math.random()*12+4)

• let random2=Math.floor(Math.random()*15+4)

• let random2=Math.floor(Math.random(4)*15)

• let random2=Math.floor(4)Math.random(15)*1

What is a string?

• a value of a variable that has been input by a user

• a pattern of characters that a user has input through parse

• a sequence of characters that is stored in memory

• characters inclusive of numbers that are used to calculate various values in required memory

JavaScript supports two syntax options for strings- double or single quotes to hold the string values - in this class we will use single quotes

• TRUE

• FALSE