HTML: Markup language
CSS: Styling language
JavaScript: Scripting language
Web APIs: Programming interfaces
All web technology
Learn web development
Discover our tools
Get to know MDN better
This page was translated from English by the community. Learn more and join the MDN Web Docs community.
View in English Always switch to English
JavaScript 에서 Nullish 값은 null또는 undefined값 중 하나입니다. Nullish 값은 항상 falsy 입니다.
null
undefined