devxlogo

Optimize ng-repeat with the Track by Feature in Angular

Take a look at the following ng-repeat code example:

This is inefficient, as the DOM is rendered every time the list is written to the page. Add the track by feature, as shown below, by allowing the code to specify the id key instead of creating random ones and slowing the process.

Charlie has over a decade of experience in website administration and technology management. As the site admin, he oversees all technical aspects of running a high-traffic online platform, ensuring optimal performance, security, and user experience.

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.