Controllers basics

Last reviewed May 28, 2026 Content v20260528

Track mode

client_angularjs

Means

In-browser AngularJS 1.x

Reading

~1 min

Level

beginner

This lesson

This lesson teaches Controllers basics: the concepts, APIs, and habits you need before advancing in AngularJS.

Without Controllers basics, you will struggle to read or extend AngularJS codebases and playground exercises.

You will apply Controllers basics in contexts like: Long-lived intranet apps, government portals, and codebases not yet moved to Angular, React, or Vue.

Write JavaScript for AngularJS 1.8, click Run—register modules/controllers, then mountApp(moduleName, templateHtml) in #ng-app; printOutput feeds the terminal.

When you can explain the previous lesson's ideas without copying starter code.

Controllers attach logic to a scope; in modern style prefer controller as syntax and avoid fat controllers.

Important interview questions and answers

Q: Why does this matter?
A: Controllers attach logic to a scope; in modern style prefer controller as syntax and avoid fat controllers.

Self-check

Summarize Controllers basics in one sentence.
What would you try next in the playground?

Challenge