I'm trying to replicate the Perl and PHP style pack and unpack functions in JavaScript.

Unsigned integers were easy enough, so my pack('n') and pack('N') are ok. But my lack of a puter science background is a hurdle now and I don't know where to start with pack('d') for packing JavaScript's standard floating point.

Is there a JavaScript library for this out there?

If not, is there a good resource where I can learn how to do this? I am fine with bitwise and binary level operations in JS, I just don't know where to start with the logic.

Thanks.

I'm trying to replicate the Perl and PHP style pack and unpack functions in JavaScript.

Unsigned integers were easy enough, so my pack('n') and pack('N') are ok. But my lack of a puter science background is a hurdle now and I don't know where to start with pack('d') for packing JavaScript's standard floating point.

Is there a JavaScript library for this out there?

If not, is there a good resource where I can learn how to do this? I am fine with bitwise and binary level operations in JS, I just don't know where to start with the logic.

Thanks.

• javascript
• binary

Share Improve this question Follow asked Mar 18, 2010 at 8:35 Tim WhitlockTim Whitlock 1,11199 silver badges1717 bronze badges

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Sorted by: Reset to default 7

Here is an existing solution: http://phpjs/functions/pack:880