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Expression

Description​

The Expression type defines a special case of presentational component. An Expression represents a mathematical expression that may be dynamically evaluated. Variables within an expression may be defined by prefixing their numeric ordering with a $ symbol, e.g. $0 would represent a variable to be populated with the value of the first parameter, $1 would represent a variable populated with the value of the second parameter e.g. Expression('$0 * $1 + 1').evaluate(2, 3) would output 7 because the expression variables have been substituted from $0 to 2 and $1 to 3, making the final evaluation 2 * 3 + 1.

Properties​

  • expression (string, required)

Example​

{
  "expression": "floor($0)"
}