Challenge 1 of 10
Parse integer
Instructions
Turn `"42px"` into an integer in `n` using `parseInt`.
Editor
IntelliSense on
// Write your code below
Module 4 of 10
numbers
Round, parse, and use Math helpers used in real apps.
JavaScript Basics · 0/10 completed · scroll down for every challenge
Challenge 2 of 10 · Parse float
Challenge 2 of 10
Parse float
Instructions
Turn `"3.14"` into a number in `pi` using `parseFloat`.
Editor
IntelliSense on
// Write your code below
Challenge 3 of 10 · Round
Challenge 3 of 10
Round
Instructions
Store `Math.round(4.6)` in `n`.
Editor
IntelliSense on
// Write your code below
Challenge 4 of 10 · Ceil
Challenge 4 of 10
Ceil
Instructions
Store `Math.ceil(2.1)` in `n`.
Editor
IntelliSense on
// Write your code below
Challenge 5 of 10 · Floor
Challenge 5 of 10
Floor
Instructions
Store `Math.floor(2.9)` in `n`.
Editor
IntelliSense on
// Write your code below
Challenge 6 of 10 · Absolute
Challenge 6 of 10
Absolute
Instructions
Store `Math.abs(-12)` in `n`.
Editor
IntelliSense on
// Write your code below
Challenge 7 of 10 · Max of list
Challenge 7 of 10
Max of list
Instructions
Store the largest of 3, 9, and 4 in `n` using `Math.max`.
Editor
IntelliSense on
// Write your code below
Challenge 8 of 10 · Min of list
Challenge 8 of 10
Min of list
Instructions
Store the smallest of 3, 9, and 4 in `n` using `Math.min`.
Editor
IntelliSense on
// Write your code below
Challenge 9 of 10 · Fixed decimals
Challenge 9 of 10
Fixed decimals
Instructions
Turn `price` 2.5 into the string `"2.50"` using `toFixed(2)` in `shown`.
Editor
IntelliSense on
const price = 2.5; // Write your code below
Challenge 10 of 10 · Number.isNaN
Challenge 10 of 10
Number.isNaN
Instructions
Set `bad` to true if `Number.isNaN(Number.NaN)`.
Editor
IntelliSense on
// Write your code below
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