Javascript iframe中的Detect事件与父级上的jQuery事件侦听器一起使用，但现在与纯JS一起使用

我试图找到几种不同的方法来添加事件侦听器，以侦听来自iFrame的自定义事件

我可以使用jQuery事件监听器成功地监听来自iFrame的事件，但是我似乎不能用纯JS来监听。如果有人愿意看一下代码，让我知道我做错了什么，那就太好了

内部iFrame Iframe容器父级

---

在这里，您的事件是在主体上触发的，所以您应该侦听主体上的事件，而不是文档上的事件：

document.querySelector("body").addEventListener("myevent:load",function() {
    console.log("Hello");
},false);

语法：

<script type="text/javascript">
<!--

// iFrame document resize script
function autoResize(id){
  var newheight
    , newwidth
    , iframe;

  if(document.getElementById){
    iframe = document.getElementById(id);
    newheight=iframe.contentWindow.document .body.scrollHeight;
    newwidth=iframe.contentWindow.document .body.scrollWidth;
  }

  iframe.height= (newheight) + "px";
  iframe.width= (newwidth) + "px";
};

// add event cross browser
function addEvent(elem, event, fn) {
  // avoid memory overhead of new anonymous functions for every event handler that's installed
  // by using local functions
  function listenHandler(e) {
    var ret = fn.apply(this, arguments);
    if (ret === false) {
      e.stopPropagation();
      e.preventDefault();
    }
    return(ret);
  }

  function attachHandler() {
    // set the this pointer same as addEventListener when fn is called
    // and make sure the event is passed to the fn also so that works the same too
    var ret = fn.call(elem, window.event);
    if (ret === false) {
      window.event.returnValue = false;
      window.event.cancelBubble = true;
    }
    return(ret);
  }

  if (elem.addEventListener) {
    elem.addEventListener(event, listenHandler, false);
  } else {
    elem.attachEvent("on" + event, attachHandler);
  }
}

// listen for load event from iFrame
addEvent(document, 'myevent:load', function(){
  // doesn't work
  console.log("IFRAME LOADED! 2");
});

document.addEventListener('myevent:load', function(){
  // also doesn't work
  console.log("IFRAME LOADED! 1");
});

$(document).bind('myevent:load', function(){
  // works
  console.log("IFRAME LOADED! - jQuery");
});

//-->
</script>

document.querySelector("body").addEventListener("myevent:load",function() {
    console.log("Hello");
},false);