access key and value of object using *ngFor

🔑💡 How to Access Key and Value of an Object Using *ngFor in Angular2 🔑💡

Are you feeling a bit 🤔 confused about how to get the key and value of an object in Angular2 while using ngFor to iterate over the object? Don't worry, you're not alone! Many developers struggle with this issue. Let me show you some easy solutions.

In Angular 1.x, we had the syntax ng-repeat="(key, value) in demo" to access the key and value of an object. However, in Angular2, the syntax is a bit different.

Here's what you can do to get the key and value dynamically using ngFor:

1. Update your code to use the keyvalue pipe provided by Angular. This pipe allows you to iterate over the keys of the object and access both the key and value.

2. Modify your code snippet as follows:

<ul>
  <li *ngFor="let item of demo | keyvalue">{{item.key}} - {{item.value}}</li>
</ul>

1. In your TypeScript code, define the demo object as a property of your component:

demo = {
  'key1': [{'key11':'value11'}, {'key12':'value12'}],
  'key2': [{'key21':'value21'}, {'key22':'value22'}],
}

Now when you run your application, the ngFor directive will iterate over the demo object and display both the key and value dynamically. 🎉

Here's a link to a plnkr with a working example: http://plnkr.co/edit/mIj619FncOpfdwrR0KeG?p=preview

By using the keyvalue pipe, you can easily access the key and value of an object in Angular2. No need to worry about writing custom pipes or getting stuck in complex code. 🚀

So, go ahead and give it a try! Let me know in the comments if you found this helpful or if you have any other questions. Happy coding! 💻💡

💬👇 Share your thoughts and experiences with accessing object key and value in Angular2! I'd love to hear from you.