how to convert string to number has 19 digit without auto rounded in javaScript? [duplicate]

Question

we have string input number input="6145390195186705543" if we want to convert to number ;java Script auto rounded this input;

(6145390195186705543)

(6145390195186705000)

BigInt(input) developer.mozilla.org/docs/Web/JavaScript/Reference/… — evolutionxbox
– evolutionxbox, Commented Nov 4, 2022 at 10:31
Does this answer your question? Is floating point math broken? (among others) — evolutionxbox
– evolutionxbox, Commented Nov 4, 2022 at 10:31

otejiri · Accepted Answer · 2022-11-04 15:05:34Z

0

This should work for what you are trying to achieve

const myFunction = (num) => {

const length = num.length;

const result = `(${num.slice(0,16).padEnd(length, "0")})`;
return result;
};

const input="6145390195186705543";
const output = myFunction(input); 
console.log(output)

edited Nov 4, 2022 at 15:05

answered Nov 4, 2022 at 10:43

otejiri

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2 Comments

mahdiyar jafari Over a year ago

this answer is have rounded the string input

otejiri Over a year ago

@mahdiyarjafari oh I see, check the edited snippet; I have done the correction

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