How to Check If All Values in Array are True in JavaScript

How can we check if all values in an array are true in JavaScript?

Suppose we’re working with an array of boolean values.

const arr = [true, true, false];

Check all values are true with every()

We can check if all values are true using every().

arr.every(v => v === true)
arr.every(Boolean)

Check all values are true with includes()

Or, we can check if the array includes a false value.

!arr.includes(false)