Presented in ng-India 2019

ng-India is India’s largest conference on Angular and JavaScript. It happened on 23 Feb in Gurgaon, India and was attended by around 350 developers around India. There were speakers from all across world teaching on various topics such as Ivy rendering, Webpack, RxJS, Change Detection in Angular, Directives, ViewEncapsulation, ngRx etc.

I also had an opportunity to deliver a 30 min talk on “You do not know about JavaScript object “. You can find recording of my talk here: https://www.youtube.com/watch?v=h9eW0zSiFaw&t=9s

 

I also did welcome note for the conference, which can be find here:

https://www.youtube.com/watch?v=1CEWDQyCrmc&t=1s

 

You can find all talks from ng-India 2019, on geek97 YouTube channel

https://www.youtube.com/channel/UC9qYCj-KbQYJ_1fmnuULr4Q/videos

 

Thanks for watching my talk. Let me know your feedback.

Video – Arrow Function in JavaScript

Arrow function was introduced in ECMA 6.  It is different than function statement or expression , as it does not have its own ‘this’ , and can also not be used as constructor.  Some important points about Arrow function are:

  • It does not have prototype property
  • It does not have arguments parameter
  • It does not have its own ‘this’
  • It can not be used with new operator

I have written a detailed article on Arrow function here :

https://www.infragistics.com/community/blogs/b/infragistics/posts/easy-javascript-part-6-arrow-functions-in-javascript

Watch this video to learn more about Arrow function

 

Please do  not forget to subscribe  geek97 YouTube channel geek97 YouTube channel for update about future videos.

 

Video – JavaScript object instances does not copy definition from the class

I recently wrote a blog post about Two Problems of a JavaScript Class. In my opinion one gotchas in a JavaScript class is , object instances does not copy definition from the class.

Watch this video to understand it through codes.  f you like the video , do not forget to subscribe to our YouTube Channel for notification about future video tutorials.

 

Video – Step by Step Component Communications in Angular

In Angular, components communicate to each other to share data such as object, string, number, array or html.

Parent and Child Components can communicate to each other in following ways

Parent and Child Components can communicate to each other in following ways

  • @Input()
  • @Output()
  • Temp Ref Variable
  • ViewChild and ContentChild

 

You can learn about these concepts in step by step video below.  If you like the video , do not forget to subscribe to our YouTube Channel for notification about future video tutorials.

 

 

 

You can read articles related to above video here :

Communication Between Components Using @Input() in Angular

Understanding @Output and EventEmitter in Angular