Output formatting basics in Javascript - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is output formatting in programming?

Output formatting means arranging and displaying data in a way that is easy to read and understand.

beginner

How do you print a variable with text in JavaScript using template literals?

Use backticks `` and ${variable} inside them. Example: console.log(`Hello, ${name}!`);

beginner

What does console.log() do in JavaScript?

It prints messages or values to the browser console or terminal, helping you see output or debug your code.

intermediate

How can you format numbers to show two decimal places in JavaScript?

Use the <code>toFixed(2)</code> method. Example: <code>let price = 5.6789; console.log(price.toFixed(2)); // 5.68</code>

beginner

Why is output formatting important?

It makes data clear and easy to understand, which helps users and developers avoid mistakes and confusion.

Which symbol is used to create template literals in JavaScript?

A Backticks (`)

B Single quotes (')

C Double quotes (")

D Parentheses ()

Template literals use backticks (`) to allow embedding variables easily.

What does console.log('Hello, ' + name); do?

A Prints 'Hello, ' followed by the value of name

B Creates a new variable called console

C Stops the program

D Formats a number

It prints the text 'Hello, ' plus the value stored in the variable name.

How do you limit a number to 2 decimal places in JavaScript?

A number.toString(2)

B number.toFixed(2)

C number.round(2)

D number.format(2)

The toFixed(2) method formats a number to 2 decimal places.

Which method prints output to the console in JavaScript?

A echo()

B print()

C console.log()

D write()

console.log() is the standard way to print output in JavaScript.

Why use output formatting?

A To delete data

B To slow down the program

C To hide errors

D To make output clear and readable

Formatting output helps users and developers understand data easily.

Explain how to use template literals in JavaScript to format output with variables.

Think about how to combine text and variables in one string.

Describe why formatting numbers to fixed decimal places is useful in output.

Consider how numbers look when printed to users.