// Tutorial //

*ngFor Directive in Angular

Published on October 7, 2016
Default avatar
By Alligator.io
Developer and author at DigitalOcean.
*ngFor Directive in Angular

While we believe that this content benefits our community, we have not yet thoroughly reviewed it. If you have any suggestions for improvements, please let us know by clicking the “report an issue“ button at the bottom of the tutorial.

NgFor is a built-in template directive that makes it easy to iterate over something like an array or an object and create a template for each item.

This post covers Angular 2 and up

Here’s a basic example of its use:

<ul>
  <li *ngFor="let user of users">{{ user.name }}</li>
</ul>

This will output html that looks like this:

<ul>
  <li>Al Dente</li>
  <li>D. Liver</li>
  <li>Pepe Roni</li>
</ul>
  • let user creates a local variable that will be available in the template.
  • of users means that we’ll be iterating over the users iterable that should be made available in our component.
  • The * character before ngFor creates a parent template. It’s a shortcut to the following syntax: template=“ngFor let item of items”.

Available local variables

You can also set local variables for the following exported values: index, first, last, even and odd. index will return the current loop index, and the other values with provide a boolean indicating if the value is true or false. For example:

<ul>
  <li *ngFor="let user of users; let i = index; let odd = odd"
      [class.odd]="odd">
    {{i + 1}}. {{ user.name }}
  </li>
</ul>

Will produce the following markup:

<ul>
  <li>1. Al Dente</li>
  <li class="odd">2. D. Liver</li>
  <li>3. Pepe Roni</li>
</ul>

See Also

Thanks for learning with the DigitalOcean Community. Check out our offerings for compute, storage, networking, and managed databases.

Learn more about us


About the authors
Default avatar
Developer and author at DigitalOcean.

Still looking for an answer?

Ask a questionSearch for more help

Was this helpful?
 
Leave a comment
Leave a comment...

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Try DigitalOcean for free

Click here to Sign up and get $200 of credit to try our products over 60 days!