✅ Validate Value Against 0, Empty String, Undefined, and Null
🔍 Purpose:
Ensure that any value being checked is also Validated for 0 (zero), Empty String, Undefined, and Null to avoid unintended behavior or logical errors.
🔒 Standard Practice
When validating a value to ensure it is not zero or invalid:
✅ Always validate against:
-
0 (zero)
-
‘ ‘ (empty string)
-
undefined
-
null
