Challenge 1 of 9
Compare numbers
Instructions
Set `isAdult` to true when `age` is greater than or equal to 18. `age` is already 21.
Editor
IntelliSense on
const age = 21; // Write your code below
Module 2 of 10
booleans
Work with true/false values, comparisons, and truthiness.
JavaScript Basics · 0/9 completed · scroll down for every challenge
Challenge 2 of 9 · Logical AND
Challenge 2 of 9
Logical AND
Instructions
Given `hasTicket` and `hasId`, set `canEnter` to true only when both are true.
Editor
IntelliSense on
const hasTicket = true; const hasId = true; // Write your code below
Challenge 3 of 9 · Logical OR
Challenge 3 of 9
Logical OR
Instructions
Set `weekend` to true when `day` is `"Saturday"` or `"Sunday"`. `day` is `"Sunday"`.
Editor
IntelliSense on
const day = "Sunday"; // Write your code below
Challenge 4 of 9 · Negate a value
Challenge 4 of 9
Negate a value
Instructions
Set `isClosed` to the opposite of `isOpen`. `isOpen` is true.
Editor
IntelliSense on
const isOpen = true; // Write your code below
Challenge 5 of 9 · Less than
Challenge 5 of 9
Less than
Instructions
Set `tooSmall` to true when `n` is less than 10. `n` is 4.
Editor
IntelliSense on
const n = 4; // Write your code below
Challenge 6 of 9 · Boolean conversion
Challenge 6 of 9
Boolean conversion
Instructions
Store `Boolean(0)` in `flag`.
Editor
IntelliSense on
// Write your code below
Challenge 7 of 9 · Double bang
Challenge 7 of 9
Double bang
Instructions
Convert `value` to a boolean with `!!` and store it in `ok`. `value` is `"ready"`.
Editor
IntelliSense on
const value = "ready"; // Write your code below
Challenge 8 of 9 · Not equal
Challenge 8 of 9
Not equal
Instructions
Set `changed` to true when `status` is not `"draft"`. `status` is `"live"`.
Editor
IntelliSense on
const status = "live"; // Write your code below
Challenge 9 of 9 · XOR-style exclusive
Challenge 9 of 9
XOR-style exclusive
Instructions
Set `onlyOne` to true when exactly one of `a` or `b` is true.
Editor
IntelliSense on
const a = true; const b = false; // Write your code below
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