如何在加载DOM之前开始加载iframe

Question

I have a question that is the oppsite of this: load an iframe asynchronously . I need to start loading the iframe the moment the browser starts loading the page, and not after the DOM has finished loading.

How can I force the load of the iframe before the DOM is loaded? Before the document.ready event?

I tried using an UpdatePanel around the iframe that starts an async postback, but I get a lot of javascript exception that crash the browser.

Answer 1

您可以让HTML仅包含IFRAME，并让IFRAME拥有onload事件，该事件会将HTML的其余部分注入到DOM中。