Add class to an element in Angular 4

Question

I was trying to create an image gallery with Angular 4.The logic behind this is to add a Cascading Style Sheet (CSS) class to the selected image that will show a red border on t

Answer 1

If you need that each div will have its own toggle and don't want clicks to affect other divs, do this:

Here's what I did to solve this...

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it requires custom numbering which sucks, but it works.