I am displaying a googlemap in an iframe on my site.

I want it to finish loading before the iframe element is displayed in the view, but when I set [loading="eager"] it doesn’t work.

Is it not possible to set [loading="eager"] when displaying a googlemap in an iframe?

Any alternatives would be appreciated.

※Sorry for my poor English as I am using a translation.

I set loading=”eager” on an iframe, but it is loaded when the element reaches the view.
I want the loading to be completed before reaching the element that describes the iframe.