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yatter
yatter
type
isNullOrUndef
Function isNullOrUndef
is
Null
Or
Undef
(
input
:
unknown
)
:
boolean
是否是null 或者 undefined
Returns
Parameters
input:
unknown
Returns
boolean
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yatter
array
case
constant
function
index
is
number
object
reg
string
type
url
is
All
Same
Type
is
All
Type
is
Async
Function
is
Boolean
is
Built
In
Function
is
Function
is
Null
Or
Undef
is
Number
is
Object
is
Plain
Object
is
Reg
Exp
is
Same
Type
is
String
is
Symbol
is
Type
Generated using
TypeDoc
是否是null 或者 undefined
Returns