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README.md

See the demo.

This script encodes to and decodes from base64. It allows you to specify a few parameters:

  • The non-alphanumeric characters.
  • The padding character, or lack thereof.
  • 8-bit or 16-bit string input.

Your standard base64 uses + and / as the non-alphanumeric characters, and = as the padding character. Now say you want base64url. No problem. Just use the following settings:

base64.settings.char62 = "-";
base64.settings.char63 = "_";
base64.settings.pad = null;

In terms of input, 8 bits is the standard. However, with only 8 bits, you can't encode Chinese characters, for example. 16 bits gives lengthier output, but allows you to preserve full Unicode fidelity as Javascript strings themselves are just arrays of 16-bit values.

test.html contains a few tests.

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Adjustable base64 encoding and decoding in Javascript.

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