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JavaScript JavaScript Array Iteration Methods Combining Array Methods Working with Objects in Arrays

Kahriq Chatmon
Kahriq Chatmon
8,694 Points

Arrow function syntax

Why does this work

const users = [
  {name: 'Samir', age: 27},
  {name: 'Angela', age: 33},
  {name: 'Beatrice', age: 42}
];

const noSamir = users.filter( (user) => user.name !== 'Samir' );

but this doesn't?

const users = [
  {name: 'Samir', age: 27},
  {name: 'Angela', age: 33},
  {name: 'Beatrice', age: 42}
];

const noSamir = users.filter( (user) => {user.name !== 'Samir'} );

I thought curly braces in arrow functions were optional?

1 Answer

Steven Parker
Steven Parker
210,425 Points

The parentheses are optional if you have a single argument. But when you use braces for the body, you need complete statement(s), not just an expression:

const noSamir = users.filter(user => { return user.name !== "Samir"; });