Angular 21.1: Spread Operator in Templates

Angular 21 just dropped, and the star feature is the template spread operator (…). Say goodbye to verbose array/object handling, now you can spread them right in your templates!

Real-World Examples

1. Array Spreading:

HTML:

@let users = [currentUser, …admins];

@for (user of users; track user.id)

{ <div>{{ user.name }}</div> }

@empty { <div>No users found.</div> }

1. Array Spreading:

2. Function Calls with Rest/Spread Params:

Just like in TS/JS, you can spread arrays into function parameters:

HTML:

<button (click)=”handleClick(…items)”>Click me</button>

These additions bring template expressions closer to real JavaScript syntax, making them more powerful and reducing the need for boilerplate helpers in the component class.