Does parseDouble exist in JavaScript?

Question

Does parseDouble method exist in JavaScript? If it exists can I parse a 21 digit number?

Answer 1

It is natively not possible to deal with a 21-digit number in JavaScript.

JavaScript has only one kind of number and it is “number”. parseFloat is equivalent to a parseDouble in  Java but it provides only 16 digits of precision and reading 21 digits will lose 5 significant digits.

 If you want more precision use the “big number” library.

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