我创建了一个节点模块来解决这个问题node-iframe-replacement。您提供父站点的源URL和CSS选择器注入您的内容，它将两者合并在一起。

对父站点的更改每5分钟被检测一次。

var iframeReplacement = require('node-iframe-replacement');

// add iframe replacement to express as middleware (adds res.merge method) 
app.use(iframeReplacement);

// create a regular express route 
app.get('/', function(req, res){

    // respond to this request with our fake-news content embedded within the BBC News home page 
    res.merge('fake-news', {
        // external url to fetch 
       sourceUrl: 'http://www.bbc.co.uk/news',
       // css selector to inject our content into 
       sourcePlaceholder: 'div[data-entityid="container-top-stories#1"]',
       // pass a function here to intercept the source html prior to merging 
       transform: null
    });
});

该源代码包含一个向BBC新闻主页注入内容的工作示例。

你应该看看JSON-P -当我有这个问题时，这是一个完美的解决方案:

https://en.wikipedia.org/wiki/JSONP

您基本上定义了一个javascript文件来加载所有数据，另一个javascript文件处理并显示数据。这样就摆脱了iframes丑陋的滚动条。

基本上有4种方法将HTML嵌入到网页中:

<iframe> An iframe's content lives entirely in a separate context than your page. While that's mostly a great feature and it's the most compatible among browser versions, it creates additional challenges (shrink wrapping the size of the frame to its content is tough, insanely frustrating to script into/out of, nearly impossible to style). AJAX. As the solutions shown here prove, you can use the XMLHttpRequest object to retrieve data and inject it to your page. It is not ideal because it depends on scripting techniques, thus making the execution slower and more complex, among other drawbacks. Hacks. Few mentioned in this question and not very reliable. HTML5 Web Components. HTML Imports, part of the Web Components, allows to bundle HTML documents in other HTML documents. That includes HTML, CSS, JavaScript or anything else an .html file can contain. This makes it a great solution with many interesting use cases: split an app into bundled components that you can distribute as building blocks, better manage dependencies to avoid redundancy, code organization, etc. Here is a trivial example:

<！—其他来源的资源必须启用cors。--> <link rel="import" href="http://example.com/elements.html">

本地兼容性仍然是一个问题，但您可以使用polyfill使其在当前的常绿浏览器中工作。

你可以在这里和这里了解更多。

你可以使用object和embed，像这样:

<object data="http://www.web-source.net" width="600" height="400">
    <embed src="http://www.web-source.net" width="600" height="400"> </embed>
    Error: Embedded data could not be displayed.
</object>

这并不新鲜，但仍然有效。但我不确定它是否具有相同的功能。

object是HTML5中一个简单的替代方案:

<对象数据= " https://github.com/AbrarJahin/Asp.NetCore_3.1-PostGRE_Role-Claim_Management/ " 宽度= " 400 " 身高= " 300 " type = " text / html " > 替换内容 < /对象>

你也可以尝试embed:

<嵌入src = " https://github.com/AbrarJahin/Asp.NetCore_3.1-PostGRE_Role-Claim_Management/ " 宽度= 200 身高= 200 onerror="alert('URL无效!!');"/>

Re-

目前，StackOverflow已经关闭了对显示外部URL内容的支持，运行代码片段不显示任何内容。但对于您的网站，它将完美地工作。

可以使用XMLHttpRequest将页面加载到div(或页面的任何其他元素)中。一个例子函数是:

function loadPage(){
if (window.XMLHttpRequest){
    // code for IE7+, Firefox, Chrome, Opera, Safari
    xmlhttp=new XMLHttpRequest();
}else{
    // code for IE6, IE5
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}

xmlhttp.onreadystatechange=function(){
    if (xmlhttp.readyState==4 && xmlhttp.status==200){
        document.getElementById("ID OF ELEMENT YOU WANT TO LOAD PAGE IN").innerHTML=xmlhttp.responseText;
    }
}

xmlhttp.open("POST","WEBPAGE YOU WANT TO LOAD",true);
xmlhttp.send();
}

如果您的服务器是有能力的，您也可以使用PHP来完成此工作，但由于您要求的是HTML5方法，因此这应该是您所需要的全部。