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24 lines
1.2 KiB
Markdown
24 lines
1.2 KiB
Markdown
# random
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The `random` package provides several functions for generating random
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numbers. It uses a cryptographically strong pseudorandom number generator when
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possible, but falls back to a weaker random number generator when
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cryptographically strong randomness is not available (on older browsers or on
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servers that don't have enough entropy to seed the cryptographically strong
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generator).
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- `Random.id([n])` - Returns a unique identifier, such as `"Jjwjg6gouWLXhMGKW"`, that is
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likely to be unique in the whole world. The optional argument `n`
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specifies the length of the identifier in characters and defaults to 17.
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- `Random.secret([n])` - Returns a random string of printable characters with 6 bits of
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entropy per character. The optional argument `n` specifies the length of
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the secret string and defaults to 43 characters, or 256 bits of
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entropy. Use `Random.secret` for security-critical secrets that are
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intended for machine, rather than human, consumption.
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- `Random.fraction()` - Returns a number between 0 and 1, like `Math.random`.
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- `Random.choice(arrayOrString)` - Returns a random element of the given array or string.
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- `Random.hexString(n)` - Returns a random string of `n` hexadecimal digits. |