Basic input concepts (prompt overview) in Javascript - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to ask the user for their name using prompt.

Javascript

const name = [1]('What is your name?');

Drag options to blanks, or click blank then click option'

Aconsole.log

Balert

Cprompt

Dconfirm

Attempts:

3 left

💡 Hint

Common Mistakes

Using alert instead of prompt

Using console.log instead of prompt

The prompt function shows a dialog box asking the user for input.

2fill in blank

medium

Complete the code to convert the input string to a number.

Javascript

const age = Number([1]);

Drag options to blanks, or click blank then click option'

AageInput

Bprompt('Enter your age')

C'30'

DparseInt('25')

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a variable that is not defined

Passing a string literal instead of prompt

The prompt function returns a string. Wrapping it with Number() converts it to a number.

3fill in blank

hard

Fix the error in the code to correctly store user input in a variable.

Javascript

let city;
city = [1]('Enter your city');

Drag options to blanks, or click blank then click option'

Aprompt

Balert

Cconsole.log

Dconfirm

Attempts:

3 left

💡 Hint

Common Mistakes

Using alert or confirm instead of prompt

Trying to assign console.log output

Use prompt to get input from the user and assign it to the variable.

4fill in blank

hard

Fill both blanks to ask for a number and convert it to an integer.

Javascript

const input = [1]('Enter a number');
const number = [2](input);

Drag options to blanks, or click blank then click option'

Aprompt

BparseInt

CNumber

Dalert

Attempts:

3 left

💡 Hint

Common Mistakes

Using alert instead of prompt

Using Number instead of parseInt when integer is needed

First, use prompt to get input as a string. Then use parseInt to convert it to an integer.

5fill in blank

hard

Fill all three blanks to get user input, convert to number, and check if it is positive.

Javascript

const input = [1]('Enter a number');
const num = [2](input);
const isPositive = num [3] 0;

Drag options to blanks, or click blank then click option'

Aprompt

BNumber

C>

DparseInt

Attempts:

3 left

💡 Hint

Common Mistakes

Using parseInt instead of Number for conversion

Using < instead of > for comparison

Use prompt to get input, Number to convert it, and > to check if positive.