Skip to main content

$formatBase

$formatBase(number?, radix?) -> string
Compact type signature<n-n?:s>

If number is omitted, the current context value is used.

Browse categories
Numeric And MathText

Source: JSONata

Documentation​

Casts the number to a string and formats it to an integer represented in the number base specified by the radix argument. If radix is not specified, then it defaults to base 10. radix can be between 2 and 36, otherwise an error is thrown.

Examples​

Basic usage​

  • $formatBase(100, 2) => "1100100"
  • $formatBase(2555, 16) => "9fb"

Format a number in a different base​

Input

This example uses the claims-lines example input. The expression reads allowedAmount from the first claim line and formats it in base 16.

Example input

JSON
[
  {
    "claimId": "clm-2001",
    "lineNumber": 1,
    "serviceCode": "PROC-010",
    "serviceDisplay": "office visit",
    "units": 1,
    "unitPrice": 125,
    "allowedAmount": 110,
    "modifiers": [
      "MOD-A"
    ]
  },
  {
    "claimId": "clm-2001",
    "lineNumber": 2,
    "serviceCode": "PROC-020",
    "serviceDisplay": "imaging study",
    "units": "1",
    "unitPrice": 350,
    "allowedAmount": 300,
    "modifiers": [
      "MOD-B",
      "MOD-C"
    ]
  },
  {
    "claimId": "clm-2001",
    "lineNumber": 3,
    "serviceCode": "PROC-030",
    "serviceDisplay": "lab panel",
    "units": 2,
    "unitPrice": 40,
    "allowedAmount": 70,
    "modifiers": []
  },
  {
    "claimId": "clm-2002",
    "lineNumber": 1,
    "serviceCode": "PROC-010",
    "serviceDisplay": "office visit",
    "units": 1,
    "unitPrice": 125,
    "allowedAmount": 115,
    "modifiers": [
      "MOD-A"
    ]
  },
  {
    "claimId": "clm-2002",
    "lineNumber": 2,
    "serviceCode": "PROC-040",
    "serviceDisplay": "counseling",
    "units": 3,
    "unitPrice": 60,
    "allowedAmount": 150,
    "modifiers": [
      "MOD-D"
    ]
  }
]

Expression

$formatBase($[0].allowedAmount, 16)

Result

"6e"