是否有可能从 html 页面中的“iframe”触发“onload”事件

Question

If there any possible way to fire onload event of iframe ?, Because for my requirement I need to load external websites in iframe. Even though some of the sites not allowing to load their pages in iframe

Eg: https://www.google.co.in , I need to validate the url whether that's valid to load in iframe or not. could any one suggest me to resolve?

Answer 1

try this code :

if (iframe.attachEvent){
     iframe.attachEvent("onload", function(){
         alert("Local iframe is now loaded."(www.111cn.net));
     });
 } else {
     iframe.onload = function(){
         alert("Local iframe is now loaded.");
     };
 }

Answer 2

Check this out, create a interval to check if the element is ready

var element = document;
var eventName = "load";
var handShake = element.attachEvent || element.addEventListener;
eventName = (handShake.toString().indexOf("add") === -1) ? "on" + eventName : eventName;
handShake(eventName, function () {
    this.setAttribute("data-loaded", "true");
});

// to check if is loaded
if(element.dataset.loaded === "true"){
    // do things
}