Answer: Use the equality operator ( == ) In simple words you can say a null value means no value or absence of a value, and undefined means a variable that has been declared but no yet assigned a value.
Read moreIS null == in JavaScript?
The JavaScript specification says about null : null is a primitive value that represents the intentional absence of any object value . If you see null (either assigned to a variable or returned by a function), then at that place should have been an object, but for some reason, an object wasn’t created.
Read moreHow do you check if JavaScript object is not null?
Use the strict inequality (! ==) operator to check if a variable is not null – myVar !== null . The strict inequality operator will return true if the variable is not equal to null and false otherwise.
Read moreIS null object in JavaScript?
null is not an object, it is a primitive value . For example, you cannot add properties to it. Sometimes people wrongly assume that it is an object, because typeof null returns “object” . But that is actually a bug (that might even be fixed in ECMAScript 6).
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