Can Events Fired From An Iframe Be Handled By Elements In Its Parent? May 30, 2024 Post a Comment Suppose I have a page located at www.example.com/foo, and it contains an with src='http://www.example.com/bar'. I want to be able to fire an event from /bar and have</div><h2 id="solution_1">Solution 1: </h2><div class="answer-desc"><p>Events can be handled by a function defined the parent window if the <code>iframe</code> is a page from the <em>same</em> domain (see MDC's article on <a rel="nofollow noreferrer noopener" href="https://developer.mozilla.org/en/Same_origin_policy_for_JavaScript">Same Origin Policy</a>); however, events will not bubble up from the <code>iframe</code> to the parent page (at least not in my tests).</p></div><h2 id="solution_2">Solution 2: </h2><div class="answer-desc"><p>I haven't tested this cross-browser yet, but it works in FF. </p><p>In the iFrame you can fire on the element parent.document:</p><a name='more'></a><pre><code id="code_2" class="hljs language-javascript"><span class="hljs-title class_">Event</span>.<span class="hljs-title function_">observe</span>(<span class="hljs-variable language_">window</span>, <span class="hljs-string">'load'</span>, <span class="hljs-keyword">function</span>(<span class="hljs-params"></span>) { parent.<span class="hljs-property">document</span>.<span class="hljs-title function_">fire</span>(<span class="hljs-string">'custom:event'</span>); }); </code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_2')">Copy</button></pre><p>and in the parent frame you can catch it with:</p><pre><code id="code_3" class="hljs language-javascript"><span class="hljs-variable language_">document</span>.<span class="hljs-title function_">observe</span>(<span class="hljs-string">'custom:event'</span>, <span class="hljs-keyword">function</span>(<span class="hljs-params">event</span>) { <span class="hljs-title function_">alert</span>(<span class="hljs-string">'gotcha'</span>); }); </code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_3')">Copy</button></pre></div><h2 id="solution_3">Solution 3: </h2><div class="answer-desc"><p>rather then catch an event on the main page, you can catch the event at the iframe, and call a function on the main page.</p><pre><code id="code_4" class="hljs language-lua"><<span class="hljs-comment">-- main page --></span><span class="hljs-function"><span class="hljs-keyword">function</span><span class="hljs-title">catchIt</span><span class="hljs-params">()</span></span> { // code here } <<span class="hljs-comment">-- iframe page --></span><span class="hljs-function"><span class="hljs-keyword">function</span><span class="hljs-title">doIt</span><span class="hljs-params">()</span></span> { top.catchIt(); } <a onclick=<span class="hljs-string">"doIt();"</span>>test</a> </code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_4')">Copy</button></pre><p>i think it would work but didnt test it</p></div><h2 id="solution_4">Solution 4: </h2><div class="answer-desc"><p>This should work as expected, to do what you need:</p><p>index.html: </p><pre><code id="code_5" class="hljs language-xml"><span class="hljs-tag"><<span class="hljs-name">script</span><span class="hljs-attr">src</span>=<span class="hljs-string">"https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.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><span class="language-javascript"> $(<span class="hljs-keyword">function</span>(<span class="hljs-params"></span>){ $(<span class="hljs-variable language_">document</span>).<span class="hljs-title function_">on</span>(<span class="hljs-string">'eventhandler'</span>, <span class="hljs-keyword">function</span>(<span class="hljs-params"></span>) { <span class="hljs-title function_">alert</span>(<span class="hljs-string">'event was fired'</span>); }); }); </span><span class="hljs-tag"></<span class="hljs-name">script</span>></span></code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_5')">Copy</button></pre><p>iframe.html:</p><pre><code id="code_6" class="hljs language-xml"><span class="hljs-tag"><<span class="hljs-name">script</span><span class="hljs-attr">src</span>=<span class="hljs-string">"https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.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><span class="language-javascript"> $(<span class="hljs-keyword">function</span>(<span class="hljs-params"></span>){ parent.$(parent.<span class="hljs-property">document</span>).<span class="hljs-title function_">trigger</span>(<span class="hljs-string">'eventhandler'</span>); }); </span><span class="hljs-tag"></<span class="hljs-name">script</span>></span></code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_6')">Copy</button></pre></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/-/Firefox?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/-/Prototypejs?alt=json-in-script&callback=bacaJuga&max-results=5'></script> <script> showBacaJuga("https://thewallacehouseblog.blogspot.com/2024/05/can-events-fired-from-iframe-be-handled.html"); 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