Every time I execute this code, the number that is returned seems to increase. Can someone please clarify why this happens?
let numbers = [8, 5, 4, 9, 7, 6, 0, 2, 3, 1, 9, 7, 4]
return Number(numbers.join(''))
Result:
8549760231974
Every time I execute this code, the number that is returned seems to increase. Can someone please clarify why this happens?
let numbers = [8, 5, 4, 9, 7, 6, 0, 2, 3, 1, 9, 7, 4]
return Number(numbers.join(''))
Result:
8549760231974
The value exceeds the limit of Number.MAX_SAFE_INTEGER (253-1). It is recommended to switch to using BigInt.
For example:
let array = [9, 2, 2, 3, 3, 7, 2, 0, 3, 6, 8, 5, 4, 7, 7, 1]
let num = BigInt(array.join(''));
console.log(num.toString());
console.log("Doubled:", (num * 2n).toString());
console.log("Squared:", (num ** 2n).toString());To verify precision, you can utilize Number.isSafeInteger.
let array = [9, 2, 2, 3, 3, 7, 2, 0, 3, 6, 8, 5, 4, 7, 7, 1]
let num = Number(array.join(''));
console.log("Is it safe?", Number.isSafeInteger(num));When you use array.join(''), the resulting value is "9223372036854772". This value exceeds the limit of Number.MAX_SAFE_INTEGER. The Number constructor cannot accurately store numbers larger than Number.MAX_SAFE_INTEGER, leading to this issue. To handle such large numbers, it is recommended to consider using a BigInt.
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