判断 iframe 是否加载完成的完美方法

1、判断 iframe 是否加载完成:

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var iframe = document.createElement("iframe");

iframe.src = "http://www.planabc.net/";

if (!/*@cc_on!@*/0) { //if not IE

    iframe.onload = function(){

        alert("Local iframe is now loaded.");

    };

} else {

    iframe.onreadystatechange = function(){

        if (iframe.readyState == "complete"){

            alert("Local iframe is now loaded.");

        }

    };

}

document.body.appendChild(iframe);

2、一个新的判断方法（很完美）

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var iframe = document.createElement("iframe");

iframe.src = "http://www.planabc.net/";

if (iframe.attachEvent){

    iframe.attachEvent("onload", function(){

        alert("Local iframe is now loaded.");

    });

} else {

    iframe.onload = function(){

        alert("Local iframe is now loaded.");

    };

}

document.body.appendChild(iframe);