How to convert a string of big number to integer?

Question

JavaScript converts all the big numbers into scientific notation. eg: '90938498237058927340892374089' this string when converted to an integer will come out like this scientific notation '9.093849823705893e+28'.

How can I convert the data type from String to an Integer and avoiding the scientific notation?

Your number is way too big. I would suggest using a library like this: https://github.com/MikeMcl/bignumber.js/ — Always Helping, Jun 27 '20 at 13:59
check out [`BigInt`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt), maybe this is what are looking for. — Marik Ishtar, Jun 27 '20 at 14:01
programming languages have limits as to how big of a number they can store as an integer. you might want to look up what that limit is. — Rick, Jun 27 '20 at 15:48

score 2 · Answer 1 · answered Jun 27 '20 at 14:01

2

In JS all the numbers are treated as floating-point so in end, they end up with precision you can use try BigInt('90938498237058927340892374089') which will give you exact number from string to number. apart from this, you can also have a look here Javascript - parse string to long this link might be helpful for you.

answered Jun 27 '20 at 14:01

Nitesh Sharma

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This is more of comment then an answer. It does not answer OP question at all. – Always Helping Jun 27 '20 at 14:05

score 0 · Answer 2 · answered Jun 27 '20 at 14:01

0

Try to use BigInt type:

BigInt('90938498237058927340892374089');

It returns BigInt number with 'n'-literal:

90938498237058927340892374089n

answered Jun 27 '20 at 14:01

inceptos

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There is a docs on MDN https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt – inceptos Jun 27 '20 at 14:02
Have you tested this at all ? Does this answers OP's question ? – Always Helping Jun 27 '20 at 14:05

How to convert a string of big number to integer?

2 Answers2