阻止网页加载 - iframe加载完成后停止页面加载 - 常规

<html>
<meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" name="viewport" />
<title>阻止网页加载 - iframe加载完成后停止页面加载</title>
<body style="margin:0;padding:0;height:100%" scroll=no>
<iframe id="infrm" name="infrm" marginwidth="0" marginheight="0" width="100%" scrolling=auto src="http://fh.9a18.cn" frameborder="0" height="100%"></iframe>
<script>
window.onload = function() {
  var iframe = document.getElementById('infrm');
  iframe.onload = function() {
    document.body.innerHTML = '<h1>网页加载已被阻断</h1>';
  }
}
</script>
</html>