How to convert a binary(input) to string(output) by JavaScript

Question

For example : input:0010 [number] output: 0010 [string]

I know the 0010 in JavaScript will be regarded as octal, so is it possible to code a function to convert it to string? The similar questions on stackoverflow had said how to convert known number of the leading zero input , but I haven't found any solution for unknown zero number input.

Similar questions :

score 2 · Answer 1 · answered Apr 08 '16 at 08:18

2

Please try this.

var bin = 1111;
var dec = parseInt(bin, 2);
var tostr= dec.toString(2)

answered Apr 08 '16 at 08:18

SuperNova

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This also can not work . Because input a number with leading zero will be treated octal . Try the `0111` ,will got `NaN` – Cheng.Lee Apr 14 '16 at 10:42
In that case, you could convert using parseInt('0111') – SuperNova Apr 14 '16 at 11:09

score 0 · Answer 2 · answered Apr 08 '16 at 07:38

If you know the wanted size for your output string, you can do this :

function pad(n, width, z) {
  z = z || '0';
  n = n + '';
 return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
}

var outputString = pad(0010.toString(8),4); // 4 is the length of your output string

score 0 · Answer 3 · edited Feb 23 '17 at 07:20

0

 var bin = 1111;
 var str = bin + '';
 console.log(str)

 // Pls try  working perfectly

edited Feb 23 '17 at 07:20

Sachin

963
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answered Apr 08 '16 at 08:30

Mohammad shaban

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-1: this is not a solution, because `var bin` is the number 'elevenhundredandeleven', not the binary representation for 15 as you implicitly claim it to be. – Hans Roerdinkholder Apr 08 '16 at 10:15

How to convert a binary(input) to string(output) by JavaScript

3 Answers3