[英]Get an element inside an iframe with javascript
how to get Element From an Iframe? 如何从iframe获取元素? i want when the attribute of an element that its in a frame is true; 我想要框架中元素的属性为true时; it show a text, and else show another text; 它显示一个文本,否则显示另一个文本; (sorry for bad english!) (对不起,英语不好!)
like that: 像那样:
<!DOCTYPE html>
<html>
<head>
<title>document</title>
</head>
<body>
<iframe id="frame" src="">
<!--we think in frame there is a span tag with button id-->
<span id="button" aria-passed="true">sss</span>
</iframe>
<br>
<!--if its true-->
<p id="content1" style="display:none;">
true
</p>
<!--if its false-->
<p id="content2" style="display:none;">
false
</p>
<!--now we want that, if aria-passed=true show content1 else content2.-->
<script type="text/javascript">
var Frame = document.getElementById('frame');
if(new RegExp ("true","gim").test(frame.contentWindow.document.getElementById('button').aria-passed="true") == true) {
document.getElementById('content1').style.display="block";
}
else {
document.getElementById('content2').style.display="block";
}
</script>
</body>
</html>
now i want to say why this code does not work???? 现在我想说为什么这个代码不起作用???? any ideas? 有任何想法吗?
It's much easier if you use jquery. 如果使用jquery,它会容易得多。
Example Code: 示例代码:
var elementattibutevalue = $("#frameID").contents().find("#htmlelementID").attr("SampleAttribute");
Hope it helps. 希望能帮助到你。 (^ _ ^) (^ _ ^)
I think the iframe in your code above is just a demonstration of how the loaded page code looks like? 我认为上面代码中的iframe只是演示了加载的页面代码的样子? Take a look at this post Javascript - Get element from within an iFrame . 看看这篇文章Javascript-从iFrame中获取元素 。 Also change your 'Frame' variable to lowercase. 还要将“ Frame”变量更改为小写。
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