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

Kahriq Chatmon
Kahriq Chatmon
8,694 Points
Posted by 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
231,184 Points
Steven Parker
Steven Parker
231,184 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"; });