How to iterate over the keys and values with ng-repeat in AngularJS?

In AngularJS, you can easily iterate over the keys and values of an object using a special syntax in ng-repeat:

<div ng-repeat="(key, value) in myObject">
  <p>Key: {{ key }} — Value: {{ value }}</p>
</div>

1. (key, value): This structure in ng-repeat tells AngularJS to iterate over each property (key) of myObject and give you the corresponding value.
2. Object vs. Array: This syntax is specific to objects. If you need to iterate over arrays, use the standard item in myArray syntax.

How It Works

• (key, value) is a built-in feature of AngularJS that enumerates an object’s properties.
• Each key-value pair is then accessible in your templates, letting you display, filter, or manipulate data directly in the view.

Tips & Best Practices

1. Check for hasOwnProperty: If myObject is inherited or extends other objects, consider verifying that the property belongs directly to myObject. AngularJS typically limits enumeration to own properties, but being aware of prototype inheritance is still a good practice.
2. Filter or Order: You can use AngularJS filters like orderBy or custom filters to sort object keys before displaying them.

Strengthen Your Skills Further

Want to deepen your understanding of JavaScript—including objects, inheritance, and best practices? Here are some resources from DesignGurus.io:

• Grokking JavaScript Fundamentals
  Perfect if you want to really grasp objects, closures, async, and more—key building blocks for AngularJS or any other JavaScript framework.

• Grokking the Coding Interview: Patterns for Coding Questions
  Learn reusable coding patterns that appear frequently in interviews and projects, helping you tackle real-world problems with confidence.

By applying the simple ng-repeat="(key, value) in myObject" syntax and solidifying your JavaScript fundamentals, you’ll be well-prepared to build more dynamic, maintainable AngularJS applications. Happy coding!