为什么var x给出iframe的长度为0。我正在检查是否有iframe标签存在于val。
<textarea name="embed">
<iframe src="http://.."></iframe>
</textarea>
$($( #embedModal textarea ).val());
var x = $textareaval.find( iframe ).length;
我可以在下面的例子中得到嵌入的长度。
<object><embed></embed></object>
textareaval.find( embed ).length;
尝试：
$textareaval.find( iframe ).andSelf( ).length
您不应该将HTML标记放在TextArea中。奇怪/坏事发生。
例如，这两个iframe在DOM树中呈现的内容完全不同：
<textarea name="embed">
<iframe src="http://www.google.com"></iframe>
</textarea>
<div name="MyDiv">
<iframe src="http://www.google.com"></iframe>
</div>
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