Map.keyOf
keyOf($value) -> string
Description
Return the first Map key found for the given value.
If the value does not exist in the Map, an empty string will be returned.
$map = { a: 1, b: 2, c: 3 } $map.has('b') //= true $map.has('X') //= false
Return the first Map key found for the given value.
If the value does not exist in the Map, an empty string will be returned.
$map = { a: 1, b: 2, c: 3 } $map.has('b') //= true $map.has('X') //= false