What is the main difference between interpreted and compiled languages?

Interpreted languages are executed line-by-line by an interpreter, while compiled languages are transformed into machine code.

Interpreted languages are faster than compiled languages.

Compiled languages are executed line-by-line by an interpreter, while interpreted languages are transformed into machine code.

Interpreted languages do not require an interpreter.

In the context of programming languages, what does an interpreter do?

Executes source code line-by-line.

Translates source code into machine code all at once.

Converts machine code back into source code.

Compiles source code into an executable file.

What is a good analogy for understanding the difference between interpreted and compiled languages?

Reading a book in Spanish vs. translating the entire book to English.

Driving a car vs. riding a bicycle.

Cooking a meal vs. ordering takeout.

Writing a letter vs. sending an email.

What is the purpose of variables in JavaScript?

To perform mathematical operations

What is a data structure?

A way of organizing and storing data so that it can be accessed and modified efficiently

A specific type of data that the computer can store in memory

What is the purpose of the 'Number' data type in JavaScript?

Used for both integer and floating-point numbers

Used to represent True or False

Indicates that a variable has been declared but not assigned to a value

What does the 'Null' data type represent in JavaScript?

Represents nothing, or it's saying that memory location of the value we are trying to access does not exist

Indicates that a variable has been declared but not assigned to a value

What does the 'Undefined' data type indicate in JavaScript?

Indicates that a variable has been declared but not assigned to a value

Used for both integer and floating-point numbers

Used to represent True or False

What are operators in JavaScript?

Symbols or keywords that perform operations on operands

Methods that manipulate strings

What is an expression in JavaScript?

A valid unit of code that resolves to a value

A function that performs a task

A method that manipulates strings

What does the modulus operator (%) do in JavaScript?

Returns the remainder of a division

Subtracts one number from another

What are reserved keywords in JavaScript?

Words that have special meaning in the language's syntax

Words that can be used as variable names

Words that are used for comments

Words that are used for styling

Why is it not good to use reserved keywords as variable names in JavaScript?

They are part of the language grammar and cannot be used as identifiers

What does "Global" mean in the context of JavaScript scopes?

It can be accessed by anything in your code base

It can be accessed within a specific function

It can be accessed as long as you import data from a file

It is essentially local to the block

What does "Local" mean in the context of JavaScript scopes?

It can be accessed within a specific function

It can be accessed by anything in your code base

It can be accessed as long as you import data from a file

It is essentially local to the block

What does "Module Scoped" mean in the context of JavaScript scopes?

It can be accessed as long as you import data from a file

It can be accessed by anything in your code base

It can be accessed within a specific function

It is essentially local to the block

What does "Block Scope" mean in the context of JavaScript scopes?

It is essentially local to the block

It can be accessed by anything in your code base

It can be accessed within a specific function

It can be accessed as long as you import data from a file

What is the correct order of namespaces from the most specific to the most general?

Local Namespace, Global Namespace, Built-in Namespace

Built-in Namespace, Global Namespace, Local Namespace

Global Namespace, Local Namespace, Built-in Namespace

Local Namespace, Built-in Namespace, Global Namespace

What are modules in JavaScript?

Units of independent, reusable code that can be organized and imported into other parts of a program.

Bundles of one or more modules and other assets.

What are packages in JavaScript?

Bundles of one or more modules and potentially other assets.

Units of independent, reusable code.

How can you change the module system to ES Module system in JavaScript?

By changing the type in the script tag to "module"

By changing the type in the script tag to "commonjs"

By changing the type in the script tag to "node"

By changing the type in the script tag to "amd"

Which of the following is the correct syntax for importing a module in CommonJS?

const elem = require('module');

import { elem } from './module.js';

Which of the following is the correct syntax for exporting a module in ES Modules?

const elem = require('module');

import { elem } from './module.js';

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Sean Idisi

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30 sec • 1 pt

What are the two ways of running JavaScript mentioned in the text?

In the browser and on a server

In the browser and with a runtime outside the browser

On a server and in a database

With a runtime outside the browser and in a database

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What are programming languages described as in the text?

According to the text, what happens once you learn one programming language?

What is JavaScript (JS) primarily used for?

What does ECMAScript define?

Which of the following is a JavaScript engine used by Google Chrome and Opera?

What are the two ways of running JavaScript mentioned in the text?

Which runtime environments are mentioned for running JavaScript outside the browser?

What is one of the main advantages of using JavaScript as a high-level language?

Which of the following is NOT a characteristic of high-level languages?

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