Bookmarks
Concepts
Activity
Courses
Learning Plans
Courses
Requests
Log In
Sign up
New Course
Concept
Optional Chaining
Optional chaining
is a feature in JavaScript that allows developers to safely access
deeply nested object properties
without having to explicitly check for
null or undefined
at each level. This reduces the risk of
runtime errors
and
simplifies code
by using the '?
'?.' operator
to short-circuit and
return undefined
if any part of the chain is nullish.
Relevant Fields:
Computer Science and Data Processing 70%
Management Activities and Operations 20%
Software Engineering and Development 10%
Generate Assignment Link
Lessons
Concepts
Suggested Topics
Foundational Courses
Learning Plans
Log in to see lessons
Log In
Sign up
3