Find the OR and AND of Array elements using JavaScript

Given an array and the is task to find the OR and AND operations of the values of an Array using JavaScript. 

These are the following methods:

• Using simple for loop
• Using reduce() Method

Approach 1: Using simple for loop

It uses a simple method to access the array elements by an index number and use the loop to find the OR and AND of values of an Array using JavaScript. 

Example 1: This example uses a simple method to find the OR of Array elements using JavaScript. 

function OR(input) {
    if (toString.call(input) !== "[object Array]")
        return false;

    let total = Number(input[0]);
    for (let i = 1; i < input.length; i++) {
        if (isNaN(input[i])) {
            continue;
        }

        total |= Number(input[i]);
    }
    return total;
}

console.log(OR([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]));

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Example 2: This example uses a simple method to find the AND of Array elements using JavaScript. 

function AND(input) {
    if (toString.call(input) !== "[object Array]")
        return false;

    let total = Number(input[0]);
    for (let i = 1; i < input.length; i++) {
        if (isNaN(input[i])) {
            continue;
        }

        total &= Number(input[i]);
    }
    return total;
}

console.log(AND([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]));

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Approach 2: Using reduce() method

The array reduce() method in JavaScript is used to reduce the array to a single value and executes a provided function for each value of the array (from left-to-right) and the return value of the function is stored in an accumulator. 

Syntax:

array.reduce( function( total, currentValue, currentIndex, arr ), initialValue )

Example 1: This example uses the array reduce() method to find the OR of values of an Array using JavaScript. 

let arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];

function ORofArray(OR, num) {
    return OR | num;
}

console.log(arr.reduce(ORofArray));

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Example 2: This example uses the array reduce() method to find the AND of values of an Array using JavaScript. 

let arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];

function ANDofArray(AND, num) {
    return AND & num;
}

console.log(arr.reduce(ANDofArray));

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