I am working on one website which loads different model on changing size

Three.js
When I continuously change the size, site gets reload on iphone devices. This issue occurs only on iphone devices. Site works fine with other devices.

You’re exceeding memory limits on iOS which causes the page to crash and reload. The only solution to fix that is to minimize memory usage of your app (ex. turn of anti-aliasing on the main canvas - if you have no other memory issues / leaks in the app, doing that should fix iOS crashes.)