---
title: "What is dependency injection (DI) in AngularJS, and why is it useful?"  
description: "What is dependency injection (DI) in AngularJS, and why is it useful?"  
author: "ICSM Computer"  
published: 2025-03-30  
updated: 2025-03-31  
canonical: https://www.mindstick.com/forum/161383/what-is-dependency-injection-di-in-angularjs-and-why-is-it-useful  
category: "angular js"  
tags: ["javascript", "angular js"]  
reading_time: 1 minute  

---

# What is dependency injection (DI) in AngularJS, and why is it useful?

What is [dependency injection](https://www.mindstick.com/articles/335832/services-and-dependency-injection-in-angularjs) (DI) in [AngularJS](https://www.mindstick.com/forum/33926/use-angularjs-without-scope-in-mvc), and why is it [useful](https://www.mindstick.com/articles/12694/how-dolomite-mineral-is-useful-in-human-life)?


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Original Source: https://www.mindstick.com/forum/161383/what-is-dependency-injection-di-in-angularjs-and-why-is-it-useful

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