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JavaScript Array every() method

The JavaScript array every() method checks whether all the given elements in an array are satisfying the provided condition. It returns true when each given array element satisfying the condition otherwise false.

Syntax

The every() method is represented by the following syntax:

Parameter

callback - It represents the function that test the condition.

currentvalue - The current element of array.

index - It is optional. The index of current element.

arr - It is optional. The array on which every() operated.

thisArg - It is optional. The value to use as this while executing callback.

Return

A Boolean value.

JavaScript Array every() method example

Let's see some examples of every() method.

Example 1

Let's check the marks of a student.

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Output:

false

Example 2

In this example, we will test whether the number of elements present in an array are satisfying the specified value.

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Output:

true false

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