Does it have to use any of the following methods to make the layout virtual?

[Zlinni]

I tried to use the external method of adding data, but I couldn't turn it into a virtual layout, I don't know if it is the behavior of 'groupKey'

I hope to get your help, which is very useful to me!

[daybrush]

@Zlinni

Check out the following demo:

https://naver.github.io/egjs-infinitegrid/Guides#use-placeholder