<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script src="http://code.jquery.com/jquery-2.1.1.min.js"></script>

===================================================
iframe高度自适应

<div id="mainbody" class="mainbody" style="margin-left:200px">

<iframe id="mainFrame" name="mainFrame" frameborder="0" scrolling="no" src="<?php echo U('index/welcome')?>" onload="changeFrameHeight()" width="100%">
</iframe>

<script type="text/javascript">

function changeFrameHeight(){
    var ifm= document.getElementById("mainFrame"); 
    ifm.height=document.documentElement.clientHeight;
}
/*window.onresize = function(){ 
alert('123') 
changeFrameHeight();  
}*/
</script>

</div>