In JavaScript, typeof null famously returns "object" , which is a historical bug. To verify that a variable is a non-null object (and not an array or other primitive), use a combined check: javascript
However, because of how JavaScript handles different "empty" types, the best approach depends on whether you also want to exclude undefined or ensure the variable is actually a valid object. 1. Strict Not-Null Check Check If Object Is Not Null In Javascript
Often, you want to ensure a variable is neither null nor undefined . Using the loose inequality operator ( != ) covers both at once. javascript In JavaScript, typeof null famously returns "object" ,