[Support] Using BigNumber.js for blockchain app

[quangnv13]

Hello everyone, now i'm using BigNumber.js for frontend of my blockchain app. It's work perfectly but some use case with uint256 value: 603563865116404668245589250390106310780736245694817307641463070622848318552 and use code bellow: new BigNumber(603563865116404668245589250390106310780736245694817307641463070622848318552).toString(10) return value is 603563865116404600000000000000000000000000000000000000000000000000000000000. I need input number with big value and return origin value as string.

Someone can help me solution for this?

[shuckster]

That number is being invisibly transformed by the JavaScript runtime before it becomes an input to BigNumber because it is above Number.MAX_SAFE_INTEGER.

Your inputs to BigNumber should be strings only.

Try to avoid using the native number-type completely, because it has more problems than just this one.

[quangnv13]

That number is being invisibly transformed by the JavaScript runtime to the output you are seeing because it is above Number.MAX_SAFE_INTEGER.

Your inputs to BigNumber should be strings only.

Try to avoid using the native number-type completely, because it has more problems than just this one.

Thanks for reply

[MikeMcl]

Yes, and unless you want the value rounded to the current DECIMAL_PLACES and ROUNDING_MODE settings, use the more efficient toString() rather than toString(10). See toString.