The iframe blocks the Onload event on the home page

Search engine retrieval procedures can not read this kind of page, not conducive to SEO

The iframe and the home page share a connection pool, and the browser has restrictions on connections to the same domain, so this affects the parallel loading of the page

You need to consider these two drawbacks before using an iframe. If you need to use an iframe, it's best to add the SRC attribute value to the iframe dynamically through javascript to get around the above two problems