我在iframe中收到未定义的错误 [英] I get an undefine error in iframe

问题描述

我下面有一个iframe:

I have an iframe below:

<iframe class='upload_target' name='upload_target' src='#' style='width:0;height:0;border:0px;solid;#fff;'></iframe>

我正在尝试在下面停止命令，但始终收到未定义的错误:

I am trying to stop a command below but I keep getting an undefined error:

$('.upload_target').contentwindow is undefined

如何解决此未定义的错误?

How can I fix this undefined error?

下面是代码:

   $(".uploadbutton").click(function() {
          $(".upload_target").contentWindow.stop(); //for anything but IE
          $(".upload_target").contentWindow.document.execCommand("Stop"); // for IE
  return stopImageUpload();

});

推荐答案

您会得到undefined，因为contentWindow是本机Javascript，并且您正在jQuery集合中使用它，而没有contentWindow作为价值.您必须先获取原始的DOM对象.改为执行此操作:

You get undefined because contentWindow is native Javascript and you're using it on a jQuery collection, which doesn't have contentWindow as a value. You have to get the original DOM object first. Do this instead:

$('.upload_target').get(0).contentWindow

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