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access iframe elements
原标题:

I have an iframe

<iframe id="Iframe1" frameborder="0" src="datalist.aspx">

In my datalist.aspx I have a radio button with id "rdb". Is it possible to access the id of radio button through iframe in my page where iframe is defined. I really want to identify if the radio button has been clicked or not in javascript code. If I can get its id then work will be easier.

问题回答

You can do the following, in the html of parent:

<html>
  <script>
    function check_radio() {
      alert(window.frames["inner_frame"].document.getElementById("rdb").checked)
    }
  </script>
  <iframe name="inner_frame" src="iframe_inner.html"></iframe>
  <a href="javascript:check_radio()">Check Radio Button 1</a>
</html>

Where the html of the inner frame (iframe_inner.html) is:

<input type="radio" name="group1" id="rdb"     value="1"> Radio Button 1
<input type="radio" name="group1" id="another" value="1"> Radio Button 2




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