Javascript:Check given number is Armstrong number

 

write code to check given number is armstrong number.

Code:

let number = 153

function isArmstrong(num){

    let expo = num.toString().length;

    let digits = num.toString().split('').map((it)=> Number(it))

    console.log('Exponentional:',expo)

    console.log('Digits:',digits)

    let sum=0;

    for(let i=0;i<digits.length;i++){

       sum=sum + digits[i] ** expo

    }

    return num ==sum

}

console.log(isArmstrong(number))

Output:

true