$$isnull

Returns true if value does not exist or equal to null

Usage

{ 
  "$$isnull": /* value to check against */
}

"$$isnull:{input}"

Returns

boolean

Arguments

Argument	Type	Values	Required / Default Value	Description
Primary	object		Yes	value to check against

Examples

Input

Definition

Output

null

"$$isnull:$"

true

Test

undefined

"$$isnull:$"

true

Test

0

"$$isnull():$"

false

Test

""

"$$isnull:$"

false

Test

false

"$$isnull:$"

false

Test