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JavaScript Angular Basics Angular Components Structural Directives

Posted by ammarkhan
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ammarkhan
Front End Web Development Techdegree Student 21,661 Points

How to read event binding?

In the video Andrew wrote code as follows

<button type="button" click="isLiked = !isLiked" [ngClass]="{{liked:isLiked}}"><button>

How do i read this for a TypeScript starter

1 Answer

Per Karlsson
Per Karlsson
12,683 Points
Per Karlsson
Per Karlsson
12,683 Points

Hi @ammarkhan,

(click)="isLiked = !isLiked"

swaps the isLiked boolean between true or false every time you click the button.

[ngClass]="{{liked:isLiked}}"

checks if the boolean is true, if it is it applies the class liked to the button.

Hope this explains it.

Cheers, Per