JS实现iframe自适应高度的方法。分享给大家供大家参考，具体如下：

<iframe id="mainFrame" name="mainFrame" src="/zwgk/hsearchview" width="740" frameborder="0" scrolling="no" scrolling="no" frameborder="0" >

</iframe>

<script type="text/javascript" language="javascript">

function reinitIframe(){

 var iframe = document.getElementById("mainFrame");

 try{

 var bHeight = iframe.contentWindow.document.body.scrollHeight;

 var dHeight = iframe.contentWindow.document.documentElement.scrollHeight;

 var height = Math.max(bHeight, dHeight);

 iframe.height = height;

 }catch (ex){}

 }

 window.setInterval("reinitIframe()", 100);

</script>