JavaScript (ES2026) reference · Array Methods

JavaScript Array every() Method

Return true if every element passes a test function. Stops at the first failure; an empty array returns true.

JavaScript (ES2026) Since ES5

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Syntax

array.every(callbackFn, thisArg)

Parameter	Description
`callbackFn`	Called for each element with `(element, index, array)`.

true or false.

Do all items pass?Try it yourself

const ages = [21, 34, 19];
console.log(ages.every((age) => age >= 18));
console.log(ages.every((age) => age >= 21));

Output

true
false

Empty arraysTry it yourself

console.log([].every((x) => x > 100)); // true: nothing failed

Output

true

Version	Change
JavaScript ES5	Added

array.some() · Return true if at least one element passes a test function. Stops at the first match; an empty array returns false.
array.filter() · Return a new array with only the elements that pass a test function. The original array is not changed.
array.find() · Return the first element that passes a test function, or undefined if none does.
JavaScript Arrays · tutorial
JavaScript Array Methods · tutorial