js往iframe动态添加数据，并设置滚动条始终在底部

<iframe id="frame" name="frame" style="width:80%;margin:20px;border:1px #69f solid" ></iframe>

点击复制

<script type="text/javascript">
	
$(function(){
	
    var iframe = window.frames['frame'];
    iframe.document.open();
    iframe.document.write('<div id="linuxresult" >的撒和大家喀什的凯撒</div>');
    iframe.document.close();
	
});

function setIframe(){
    			   var rs = document.getElementById('frame').contentWindow.document.getElementById('linuxresult');
			   //console.log(rs);
			   var p = document.createElement("span");
			   p.innerHTML = msg.data;
			   rs.appendChild(p);
			   var br = document.createElement("br");
		       rs.appendChild(br);
		       var ww = document.getElementById('frame').contentWindow.document.body.scrollHeight;		//获取iframe滚动条高度
		       console.log(ww);
		       document.getElementById('frame').contentWindow.document.body.scrollTop = ww;				//设置滚动条始终在最后
		       var qq = document.getElementById('frame').contentWindow.document.body.scrollTop;			
		       console.log(qq);
}

	
</script>