Converting Decimal Number to Binary

Asked Mar 07 '17 at 09:24

Active Mar 07 '17 at 09:24

Viewed 1,591 times

I found this code on W3schools for converting decimal into binary.

function dec2bin(dec){
return (dec >>> 0).toString(2);
}

I don't understand what is the purpose for making zero fill right shift in this case? What is the use of setting the shift to 0 (i.e. dec >>> 0) since as I know it doesn't push any binary digit to the right at all?

I am a JS beginner. Thanks!

asked Mar 07 '17 at 09:24

Wilson Lau

1

It converts a number to an integer. It’s the same as `dec | 0` or `~~dec`. – Sebastian Simon Mar 07 '17 at 09:27
1

@Xufox, not only, it makes a 32 bit number. – Nina Scholz Mar 07 '17 at 09:28
you can manually check difference between >> and >>> and compare results – Banzay Mar 07 '17 at 09:35
@Banzay This question isn’t about the difference between `>>` and `>>>`. – Sebastian Simon Mar 07 '17 at 09:40

Converting Decimal Number to Binary

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