Alternate Text For Iframes July 25, 2024 Post a Comment We have alternate text, alt attribute, for an img tag in HTML, which will show up when the image doesn't come up. I tried using the tag with iframe too. iframe</code> is done loading.</p></div><h2 id="solution_2">Solution 2: </h2><div class="answer-desc"><p>Since my first attempt misunderstood your question, let's try this instead:</p><a name='more'></a><pre><code id="code_2" class="hljs language-xml"><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>) { $(<span class="hljs-string">"iframe"</span>).<span class="hljs-title function_">not</span>(<span class="hljs-string">":has([src])"</span>).<span class="hljs-title function_">each</span>(<span class="hljs-keyword">function</span> (<span class="hljs-params"></span>) { <span class="hljs-keyword">var</span> ifrm = <span class="hljs-variable language_">this</span>; ifrm = (ifrm.<span class="hljs-property">contentWindow</span>) ? ifrm.<span class="hljs-property">contentWindow</span> : (ifrm.<span class="hljs-property">contentDocument</span>.<span class="hljs-property">document</span>) ? ifrm.<span class="hljs-property">contentDocument</span>.<span class="hljs-property">document</span> : ifrm.<span class="hljs-property">contentDocument</span>; ifrm.<span class="hljs-property">document</span>.<span class="hljs-title function_">open</span>(); ifrm.<span class="hljs-property">document</span>.<span class="hljs-title function_">write</span>($(<span class="hljs-variable language_">this</span>).<span class="hljs-title function_">attr</span>(<span class="hljs-string">"alt"</span>)); ifrm.<span class="hljs-property">document</span>.<span class="hljs-title function_">close</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_2')">Copy</button></pre><p>This will read the "alt" tag value for any iframe with either no src attribute or a src attribute with a blank value, and write the alt text into the body of that iframe.</p><p>Assist from <a rel="nofollow noreferrer noopener" href="https://stackoverflow.com/questions/997986/write-elements-into-a-child-iframe-using-javascript-or-jquery">Write elements into a child iframe using Javascript or jQuery</a></p></div><h2 id="solution_3">Solution 3: </h2><div class="answer-desc"><p>The <iframe> element doesn't support an alt attribute, but it does support longdesc. Still, the HTML specification does not dictate how browsers handle long description (or alternate) text. The only way to guarantee any specific behavior is to use JavaScript. Here is an untested example using jQuery:</p><pre><code id="code_3" class="hljs language-javascript"><span class="hljs-comment">// Not tested</span> $(<span class="hljs-string">'iframe'</span>).<span class="hljs-title function_">each</span>(<span class="hljs-keyword">function</span>(<span class="hljs-params"></span>) { <span class="hljs-keyword">if</span> ($(<span class="hljs-variable language_">this</span>).<span class="hljs-title function_">attr</span>(<span class="hljs-string">'href'</span>) == <span class="hljs-string">''</span>) { <span class="hljs-comment">// Do something with $(this).attr('longdesc')</span> } }); </code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_3')">Copy</button></pre></div><h2 id="solution_4">Solution 4: </h2><div class="answer-desc"><p>I don't know of a way to trap for 404 responses from an iframe in any kind of straightforward way, however you could trap it with some jQuery:</p><pre><code id="code_4" class="hljs language-xml"><span class="hljs-tag"><<span class="hljs-name">iframe</span><span class="hljs-attr">id</span>=<span class="hljs-string">"myFrame"</span>></span><span class="hljs-tag"></<span class="hljs-name">iframe</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-title function_">ajax</span>({ <span class="hljs-attr">url</span>: <span class="hljs-string">"http://www.abc.com"</span>, <span class="hljs-attr">success</span>: <span class="hljs-keyword">function</span> (<span class="hljs-params">data</span>) { $(<span class="hljs-string">"#myFrame"</span>).<span class="hljs-title function_">html</span>(data); }, <span class="hljs-attr">error</span>: <span class="hljs-keyword">function</span> (<span class="hljs-params"></span>) { $(<span class="hljs-string">"#myFrame"</span>).<span class="hljs-title function_">html</span>(<span class="hljs-string">"Web site is not avaialable"</span>); } }); </span><span class="hljs-tag"></<span class="hljs-name">script</span>></span></code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_4')">Copy</button></pre></div><h2 id="solution_5">Solution 5: </h2><div class="answer-desc"><p>What about using an image with your alt info on it as the background of the div containing the iframe in question?</p><p>Or, better yet:</p><p>You should think about using an image with your alt info on it as the background of the div containing the iframe in question. This, combined with some positioning, you are there...</p><p>Come to think of it, it's what I do to display a backup ad in the case of, and in place of, where the one in the iframe did not load...</p></div> </div> <div id='baca-juga'></div> <script> //<![CDATA[ var bacaJugaJudul=[],bacaJugaNum=0,bacaJugaUrl=[];function bacaJuga(a){for(var u=0;u<a.feed.entry.length;u++){var e=a.feed.entry[u];bacaJugaJudul[bacaJugaNum]=e.title.$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/-/Alt?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/-/Jsp?alt=json-in-script&callback=bacaJuga&max-results=5'></script> <script> showBacaJuga("https://stihl600blowergetitnow.blogspot.com/2024/07/alternate-text-for-iframes.html"); 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