._isnumber - macmcmeans/localDataStorage GitHub Wiki
localDataStorage._isnumber( keyName )
This Memory Key method performs a boolean type check against the value of keyName testing for a Number (either Float or Integer).
EXAMPLE:
● localData._isnumber( 'employmentStart' ); --> true
You can also determine whether a Memory Key is an integer or a float.
🛢 The corresponding disk-based method is isnumber.
📝 NOTE: When you need to retrieve a Memory Key's data type, you can use _showtype.