json.exists

This function checks whether the key or JSONPath is present in the JSON object. For the expression format, see https://github.com/oliveagle/jsonpath.

Syntax

json.exists(jsonObject, key)

Arguments

Argument	Type	Description
jsonObject	any	The JSON object.
key	string	The key or JSONPath to check

Returns

Type	Description
boolean	True, if the value is associated with the key or JSONPath. False otherwise.

Examples

Let us say the jsonObject includes the following.

jsonObject = 
{
 "colors": 
  [
     { "id": 1, "value": "red" },
     { "id": 2, "value": "green" },
     { "id": 3, "value": "blue" }
  ]
}

In this case: 

• The function json.exists(jsonObject, "$loop.colors[?(@.value == 'red')].value[0]") returns true.
• The function json.exists(jsonObject, "$loop.colors[?(@.value == 'yellow')].value[0]") returns false.

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