Give Chrome Extension Access To Iframe Contents October 27, 2023 Post a Comment I've made a Chrome Extension that loads my New Tab page with an of my YouTube subscription page (I got around the X-frame-options issue) and want to isolate a specif</div><h2 id="solution_1">Solution 1: </h2><div class="answer-desc"><p>From the description here and chrome extension related questions you asked these days, I'd like to suggest you learn more from <a rel="nofollow noreferrer noopener" href="https://developer.chrome.com/extensions">Official Guide</a>, since it seems you are confused by <a rel="nofollow noreferrer noopener" href="https://developer.chrome.com/extensions/event_pages">Event page</a> and <a rel="nofollow noreferrer noopener" href="https://developer.chrome.com/extensions/content_scripts">content scripts</a> ( you should know all_frames only apply to content scripts).</p><p>Take a look at <a rel="nofollow noreferrer noopener" href="https://developer.mozilla.org/en-US/docs/Web/Security/Same-origin_policy">Same-origin Policy</a> and you should know Chrome extension doesn't allow you to access contentDocument of the iframe.</p><p>Since your purpose is to extract the #content part from youtube then append that to your canvas in new tab page, why not </p><a name='more'></a><ol><li>just send a ajax request to youtube</li><li>parse the returned html response and extract the #content part</li><li>then append it to canvas</li></ol><p>The code looks like:</p><p>Manifest.json</p><pre><code id="code_0" class="hljs language-json"><span class="hljs-punctuation">{</span><span class="hljs-attr">"name"</span><span class="hljs-punctuation">:</span><span class="hljs-string">"Your extension name"</span><span class="hljs-punctuation">,</span><span class="hljs-attr">"manifest_version"</span><span class="hljs-punctuation">:</span><span class="hljs-number">2</span><span class="hljs-punctuation">,</span><span class="hljs-attr">"version"</span><span class="hljs-punctuation">:</span><span class="hljs-string">"1.0"</span><span class="hljs-punctuation">,</span><span class="hljs-attr">"chrome_url_overrides"</span><span class="hljs-punctuation">:</span><span class="hljs-punctuation">{</span><span class="hljs-attr">"newtab"</span><span class="hljs-punctuation">:</span><span class="hljs-string">"newtab.html"</span><span class="hljs-punctuation">}</span><span class="hljs-punctuation">,</span><span class="hljs-attr">"permissions"</span><span class="hljs-punctuation">:</span><span class="hljs-punctuation">[</span><span class="hljs-string">"https://www.youtube.com/feed/subscriptions/*"</span><span class="hljs-punctuation">]</span><span class="hljs-punctuation">}</span></code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_0')">Copy</button></pre><p>newtab.html</p><pre><code id="code_1" class="hljs language-xml"><span class="hljs-meta"><!DOCTYPE <span class="hljs-keyword">html</span>></span><span class="hljs-tag"><<span class="hljs-name">html</span>></span><span class="hljs-tag"><<span class="hljs-name">head</span>></span><span class="hljs-tag"></<span class="hljs-name">head</span>></span><span class="hljs-tag"><<span class="hljs-name">body</span>></span><span class="hljs-tag"><<span class="hljs-name">div</span><span class="hljs-attr">id</span>=<span class="hljs-string">"canvas"</span>></span><span class="hljs-tag"></<span class="hljs-name">div</span>></span><span class="hljs-tag"><<span class="hljs-name">script</span><span class="hljs-attr">type</span>=<span class="hljs-string">"text/javascript"</span><span class="hljs-attr">src</span>=<span class="hljs-string">"jquery.js"</span>></span><span class="hljs-tag"></<span class="hljs-name">script</span>></span><span class="hljs-tag"><<span class="hljs-name">script</span><span class="hljs-attr">type</span>=<span class="hljs-string">"text/javascript"</span><span class="hljs-attr">src</span>=<span class="hljs-string">"script.js"</span>></span><span class="hljs-tag"></<span class="hljs-name">script</span>></span><span class="hljs-tag"></<span class="hljs-name">body</span>></span><span class="hljs-tag"></<span class="hljs-name">html</span>></span></code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_1')">Copy</button></pre><p>script.js</p><pre><code id="code_2" class="hljs language-javascript">$.<span class="hljs-title function_">post</span>(<span class="hljs-string">"https://www.youtube.com/feed/subscriptions"</span>, <span class="hljs-keyword">function</span>(<span class="hljs-params">html</span>) { $(html).<span class="hljs-title function_">find</span>(<span class="hljs-string">"#content"</span>).<span class="hljs-title function_">appendTo</span>(<span class="hljs-string">'#canvas'</span>); }); </code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_2')">Copy</button></pre><p>Please be aware that the original image src in youtube page looks like <code>src="//..."</code>, you should add the right domain before <code>//</code> in your chrome extension. And youtube has many scripts to load, you also need to deal with that part of logic. </p><p><strong>Last by not least</strong>, I think the best way is to find some public 3rd party api from youtube, I didn't use it but it seems <a rel="nofollow noreferrer noopener" href="https://developers.google.com/youtube/">Youtube | Google Developer</a> may help.</p></div> </div> <div id='baca-juga'></div> <script> //<![CDATA[ var bacaJugaJudul=[],bacaJugaNum=0,bacaJugaUrl=[];function bacaJuga(a){for(var u=0;u<a.feed.entry.length;u++){var e=a.feed.entry[u];bacaJugaJudul[bacaJugaNum]=e.title.$t;for(var l=0;l<e.link.length;l++)if("alternate"==e.link[l].rel){bacaJugaUrl[bacaJugaNum]=e.link[l].href,bacaJugaNum++;break}}}function showBacaJuga(a){function u(a,u){u.parentNode.insertBefore(a,u.nextSibling)}var e=document.querySelector("#baca-juga"),l=document.createElement("div"),t=document.querySelector(".post-body-artikel").querySelectorAll("div > br, span > br, div > p, span > p"),r=Math.ceil(.5*t.length),n=document.getElementById("related"),c=(l.setAttribute("class","baca-juga-wrap"),{bacaJuga:!0,jumlahBacaJuga:3,judulBacaJuga:"Baca Juga"});optionLinkMagz(c);if(!0===c.bacaJuga&&void 0!==t[r]){u(e,null!==n?n:t[r]);for(var g=0;g<bacaJugaUrl.length;g++)bacaJugaUrl[g]==a&&(bacaJugaUrl.splice(g,1),bacaJugaJudul.splice(g,1));var J=Math.floor((bacaJugaJudul.length-1)*Math.random()),g=0;if(0<bacaJugaJudul.length&&0<c.jumlahBacaJuga){e.appendChild(l);n=e;null!=(n=n.previousElementSibling)&&"BR"===n.tagName&&(n.style.display="none");for(var i="<strong>"+c.judulBacaJuga+"</strong><ul>";g<bacaJugaJudul.length&&g<c.jumlahBacaJuga;g++)i+='<li><a href="'+bacaJugaUrl[J]+'">'+bacaJugaJudul[J]+"</a></li>",J<bacaJugaJudul.length-1?J++:J=0;l.innerHTML=i+="</ul>"}}} //]]> </script> <script src='/feeds/posts/summary/-/Google Chrome Extension?alt=json-in-script&callback=bacaJuga&max-results=5'></script> <script src='/feeds/posts/summary/-/Html?alt=json-in-script&callback=bacaJuga&max-results=5'></script> <script src='/feeds/posts/summary/-/Iframe?alt=json-in-script&callback=bacaJuga&max-results=5'></script> <script src='/feeds/posts/summary/-/Javascript?alt=json-in-script&callback=bacaJuga&max-results=5'></script> <script src='/feeds/posts/summary/-/Jquery?alt=json-in-script&callback=bacaJuga&max-results=5'></script> <script> showBacaJuga("https://wheelchair-cushion1.blogspot.com/2023/10/give-chrome-extension-access-to-iframe.html"); 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