Check if all values in an array are true then return a true in JavaScript

In this short article, we will show you how to check if all values in an array are true then return a true boolean statement in JavaScript.

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Let’s assume that we have the following array of booleans.

var arr1 = [true, false, true];
var arr2 = [true, true, true];

In the above code, the value of `arr1` should be `false` as one item in the list is `false` while the value of `arr2` should be `true` because all items are `true`.

We can use the every() method to get the desired output.

var arr1 = [true, false, true];
var arr2 = [true, true, true];

let myFunction = arr => arr.every(v => v === true);

myFunction(arr) {
  return arr.every(v => v === true);
}

console.log(myFunction(arr1)); // Output: false
console.log(myFunction(arr2)); // Output: true

We can simply pass the `Boolean` as a callback to `every()` method.

myFunction(arr) {
  return arr.every(Boolean);
}

That’s it for today.
Thank you for reading. Happy Coding..!! 🙂