向 iframe 添加事件侦听器 [英] Adding an event listener to an iframe
问题描述
是否可以向 iframe 添加事件侦听器?我试过这段代码,但它似乎不起作用:
Is it possible to add an event listener to an iframe? I've tried this code, but it doesn't seem to work:
document.getElementsByTagName('iframe')[0].contentWindow.window.document.body.addEventListener('afterLayout', function(){
console.log('works');
});
我也刚刚尝试使用通过 id 获取元素并通过我正在使用的 JavaScript 框架添加我的侦听器,如下所示:
I've also just tried using getting the element by id and adding my listener via the JavaScript framework I'm using, like this:
Ext.fly("iframeID").addListener('afterLayout', function(){ alert('test'); });
我可以在 iframe 中调用函数,所以我认为安全性不是问题.有任何想法吗?
I can call functions in the iframe, so I don't think security is an issue. Any ideas?
推荐答案
我从来没有尝试过处理 'afterLayout' 事件,而是为了更多浏览器兼容的代码您将使用 (iframe.contentWindow || iframe.contentDocument
) 而不是 iframe.contentWindow
.
I never tried to handle 'afterLayout' event but for more browser compatible code
you'll use (iframe.contentWindow || iframe.contentDocument
) instead of iframe.contentWindow
.
尝试类似的东西
var iframe = document.getElementsByTagName('iframe')[0],
iDoc = iframe.contentWindow // sometimes glamorous naming of variable
|| iframe.contentDocument; // makes your code working :)
if (iDoc.document) {
iDoc = iDoc.document;
iDoc.body.addEventListener('afterLayout', function(){
console.log('works');
});
};
希望它会有所帮助.
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