javascript - 将动态内容设置为 iframe

Question

我从服务器接收不同页面的完整 HTML 代码作为字符串:

 $.post($form.attr("action"), $form.serialize(), function(responseText) {
      console.log("text received");

      //Setting dynamic content to iframe method *

    }).error(function(p1, p2, p3){
      alert("error!");
      console.log(p1 + p2 + p3);
    })

;

设置动态内容到iframe方法1:

var s = $(responseText);
$('#FileFrame').contents().find('html').html(s);

设置动态内容到iframe方法2:

var $frame = $('#FileFrame');
  var doc = $frame[0].contentWindow.document;
  var $body = $('body',doc);
  $body.html(responseText);

设置动态内容到iframe方法3:

var iframe = document.getElementById('FileFrame');
   var iframedoc = iframe.document;
   if (iframe.contentDocument)
   {        iframedoc = iframe.contentDocument;
   console.log("iframe has contentDocument");
   }
   else if (iframe.contentWindow)
   {
   iframedoc = iframe.contentWindow.document;
   console.log("iframe has contentWindow.document");
   }
   if (iframedoc) {
   //iframedoc.open();
   iframedoc.write(responseText);
   iframedoc.close();
   console.log("iframedoc is not NULL");
   } else {
   alert('Cannot inject dynamic contents into iframe.');
   }

问题在于，有的页面用方法1显示良好，有的页面用方法2显示良好，有的页面用方法3显示良好，但都不能覆盖所有网页。请帮忙

Answer 1

Try to modify your third method like this:

var iframe = document.getElementById('FileFrame');
var iframeDoc;
if(iframe.contentWindow){
   iframeDoc = iframe.contentWindow;
}
else if(iframe.contentDocument.document){
   iframeDoc = iframe.contentDocument.document;
}
else if (iframe.contentDocument) {
   iframeDoc = iframe.contentDocument;
}
else{
   alert('Cannot inject dynamic contents into iframe.');
   return;
}
iframeDoc.document.open();
iframeDoc.document.write(responseText);
iframeDoc.document.close();