✅ Validate Value Against 0, Empty String, Undefined, and Null

✅ 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