array.every()

This method operates on an array. You typically fetch documents from a collection as a set, not an Array. For the equivalent Set method, see set instance methods.

For differences between Sets and Arrays, see Sets vs. Arrays.

Test if every Array element passes the given function test.

Signature

every(predicate: () => Boolean | Null) => Boolean

Description

The every() method tests if every element of the Array passes the predicate test.

Parameters

Parameter Type Required Description

predicate

Function

Yes

Function to test the Array elements.

predicate parameters: None

Return value

Type Description

Boolean

Status of predicate applied to all Array elements:
true = Every element passes the predicate test.
false = At least one element doesn’t pass the predicate test.

Examples

let iter = [1, -2, 3]
iter.every(v => v > 0)
false

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