var theFrame=document.createElement('iframe')theFrame.src="https://www.powr.io/reviews/i/26790199#page"document.body.appendChild(theFrame)//document.appendChild isn't reliable since it says some ONLY ALLOWS ONE APPENDAGE or something like that//the above code only works if cors doesn't block you, meaning that your source for this would be from powr.io as well(THIS IS A SANDBOX SO IT GETS BLOCKED BECAUSE OF ORIGIN DIFFERENCE)//if i run the code below, it works on newtab(if u pop up the console paste and enter)document.write('<div class="powr-reviews" id="2753c372_1606181564"></div>')var x=document.createElement('script')x.src="https://www.powr.io/powr.js?platform=html"document.body.appendChild(x)现在我有一个小的repl来表明你的 2 行工作，但如果你的源（在客户端运行它时的原点）是文件，它就不起作用现在在下面，我尝试模仿代码到底做了什么JavaScript 示例及其repl//iframe loaderfunction iframer(sourceUrl){ document.body.innerHTML="" //makes sure ONLY this loads var iframe = document.createElement('iframe'); iframe.src = sourceUrl; iframe.width=screen.availWidth; iframe.height=screen.availHeight; iframe.style="border: solid transparent"; document.body.appendChild(iframe); return iframe;}var myFrame=iframer("https://www.powr.io/reviews/i/26790199#page")console.log(myFrame)HTML 示例及其repl<meta http-equiv="refresh" content="0;URL='https://www.powr.io/reviews/i/26790199#page'">