Programming MisconceptionsHomeMisconceptionsConceptsLanguagesTextbooksContributorsAbout
HomeLanguages
JavaScript
ecma11
Undefined type

ECMAScript Language Specification, Version 11
4.3.11. Undefined type

Read this Section of the Authoritative Specification

https://www.ecma-international.org/ecma-262/11.0/index.html#sec-terms-and-definitions-undefined-type

2 Documented Misconceptions

Misconception
NullAndUndefinedAreTheSame
The values null and undefined are the same
Misconception
TypeofNullIsNull
The value null is of type 'null'

Find Misconceptions by...

Concept
Programming Language
Notional Machine
Textbook

About

About This Site
Structure and Content of the Inventory
Contributors