javascript remove leading zeros from a number

Question

const a = 043      
console.log(Number(a))

Here the variable a is octal because of which we get the result as 35. Instead, I want the variable a to be a number 43. Found results for removing leading zeros from a string(Remove leading zeros from a number in Javascript)

You can't do it. If it's not a string, the number is parsed by the compiler, your code never sees the original representation. — Barmar, Jan 18 '22 at 02:47
`043` is an _octal_ literal, not the number `43` with a zero in front of it. — Tim Biegeleisen, Jan 18 '22 at 02:53
Anyway, why can't you just **not** put the 0 in front of 43? — President James K. Polk, Jan 18 '22 at 04:02
I have written a function to which the input(I get from Excel) can also be a number with leading zeros(like 043) — SB Praveen, Jan 18 '22 at 04:32

Ian · Accepted Answer · 2022-01-18T04:36:42.597

1

Because your value starts with 0, and its type is number instead of string, it will be recognized as octal, and when you use it directly, javascript will convert it to decimal

The fastest way you can use Number.prototype.toString(radix)

let a = 043
console.log(a.toString(8))

edited Jan 18 '22 at 04:36

answered Jan 18 '22 at 04:18

Ian

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javascript remove leading zeros from a number

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