show a spinner before the image lazy loads

[ericjoy94]

I am using react-slick to show a bunch of carousels on the page.
The carousels slides are lazy loaded by adding the lazyLoad:'onDemand' to the settings in the carousel. Now I wish to add a spinner before the image loads in the slides.
I am not very sure how to do this.

[minicopper]

i want to show a placeholder image before the image lazyload ,i don't have a good idea ,wish to add a image placeholder

[ericjoy94]

Any updates ?

[ericjoy94]

Can it be a possibilty to use IntersectionObserver API