Blog

Need to work with a really big number in JavaScript? Larger than a normal int? BigInt is your answer!

Say, for example, you were trying to solve the “A Very Big Sum” problem on HackerRank. The code is simple with BigInt():

function aVeryBigSum(ar) {
    // Write your code here
    let sum = 0n;

    for (let i = 0; i < ar.length; i++) {
        sum = sum + BigInt(ar[i]);
    }
    return sum;
}

You can find detail on Mozilla and W3docs.