max_decimals

Checks that the number has at most the given number of digits after the decimal point, and returns it as a number.

Error codes: TOO_MANY_DECIMALS, NOT_NUMBER, FORMAT_ERROR

Live example · edit rules or inputOpen in playground

rules

{
    amount: { max_decimals: 2 }
}

{ amount: { max_decimals: 2 } }

input

{
    amount: '10.505'
}

{ amount: '10.505' }

Invaliderrors

{
  "amount": "TOO_MANY_DECIMALS"
}

The argument is a non-negative integer. The value is a JSON number or a string in the grammar of decimal, see Numbers. A string too large for a finite double (a 1 with 400 zeros) gives NOT_NUMBER, because the output is a number and JSON has no infinity.

• Trailing zeros after the decimal point do not count, so a string and a JSON number with the same value give the same result: "1.230" and 1.230 have 2 digits, "5.000" has none.
• A JSON number is counted in its string form. A string is counted as it is written, without the trailing zeros, so "0.10000000000000000001" has 20 digits even though a double cannot hold it exactly.