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JavaScript & TypeScript

Spread Operator

/spred ˈɒpəreɪtər/

Definition

The ... syntax expanding an array or object's elements into another array or object.

Example in context

"const updated = { ...user, email: newEmail } creates a new object with all user properties plus the new email."

Related terms

  • Destructuring — Syntax that extracts values from arrays or properties from objects into distinct variables.
  • Rest — Representational State Transfer — an architectural style for APIs using HTTP methods and stateless communication.

Practice this term

Master Spread Operator in context by working through exercises in the JavaScript & TypeScript module. You'll see the term used in real engineering scenarios with multiple-choice, fill-in-the-blank, and matching drills.

Practice in exercises → Browse all words

Frequently Asked Questions

What does "Spread Operator" mean?

The ... syntax expanding an array or object's elements into another array or object.

How do you pronounce "Spread Operator"?

"Spread Operator" is pronounced /spred ˈɒpəreɪtər/.

Can you use "Spread Operator" in a sentence?

"const updated = { ...user, email: newEmail } creates a new object with all user properties plus the new email."