使用Javascript访问父级中的iframe变量 [英] Accessing Iframe Variable in Parent With Javascript
问题描述
我知道在Stack Overflow上已经有令人难以置信的类似问题，但是我尝试了其中的许多问题，却一无所获.我正在尝试从子iframe抓取一个变量，以便在父窗口中使用.
I'm aware there are incredibly similar questions on Stack Overflow already for this, but I've tried MANY of them, and am just getting nothing. I'm trying to grab a variable from the child iframe to use in the parent window.
在child.html头标记中
In child.html head tag
<script type="text/javascript">
var myVar="1";
</script>
在parent.html
In parent.html
<script type="text/javascript">
function load()
{
var scroll="0";
scroll = window.myIframe.myVar;
if (scroll == "0") DO SOMETHING;
else DO SOMETHING ELSE;
}
</script>
<iframe src="child.html" name="myIframe" onload="load()">
<p>Your browser does not support iframes.</p>
</iframe>
无论我如何尝试，都无法滚动以从子iframe抓取myVar变量.这几乎是Stack Overflow和其他论坛上人们常说完美的例子.任何想法我在做什么错了吗?
And no matter what I try, I cannot get scroll to grab the myVar variable from the child iframe. This is nearly verbatim of examples on Stack Overflow and other forums that people say work perfectly; any ideas what I'm doing wrong?
编辑:它们在同一个域中.
They are on the same domain.
推荐答案
在iframe中加载页面时，尝试从子内部访问oad().
Try to access oad() from inside child when the page loads in iframe.
添加子项:
<body onload="parent.load()">
此外，您可以更改要传递的代码，并在load(prm)中获取该变量作为参数.
Also, you can change the code to pass and get the variable as parameter in load(prm) .
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