regex

A regular expression applied to the located element's text (or HTML, with source), or to the whole document when the field has no other locator. The first capture group is the value, or the whole match without one.

Type: string

#Example

{
  "total": {
    "regex": "Total:\\s*([0-9.]+)",
    "type": "number"
  }
}

From the contract fixture evaluate-opaque, a program the test suite validates.