Determine whether iframe has been loaded

I can think of the following methods:

 

Method 1: jQuery load ()

 

Js Code

1. Var frm = document. getElementById ('myiframe ');
2. $ (Frm). load (function () {// and other iframe loaded
3. Dosomething ();
4. });

Method 2: onreadystatechange

 

Js Code

1. Var iframe = document. createElement ("myiframe ");
2. Iframe. src = "http://www.baidu.com ";
3. If (! /* @ Cc_on! @ */0) {// condition comment for IE if it is not IE
4. Iframe. onload = function (){
5. Alert ("Local iframe is now loaded .");
6. };
7. } Else {
8. Iframe. onreadystatechange = function () {// All nodes under IE have onreadystatechange.
9. If (iframe. readyState = "complete "){
10. Alert ("Local iframe is now loaded .");
11. }
12. };
13. }
14. Document. body. appendChild (iframe );

 

Method 3: attachEventJs code

1. Var iframe = document. createElement ("iframe ");
2. Iframe. src = "http://www.baidu.com ";
4. If (iframe. attachEvent ){
5. Iframe. attachEvent ("onload", function () {// IE
6. Alert ("Local iframe is now loaded .");
7. });
8. } Else {
9. Iframe. onload = function () {// non-IE
10. Alert ("Local iframe is now loaded .");
11. };
12. }
14. Document. body. appendChild (iframe );