{"id":30140,"date":"2023-01-13T11:52:36","date_gmt":"2023-01-13T06:22:36","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-testing-if-a-link-is-a-youtube-link\/"},"modified":"2023-01-13T11:52:36","modified_gmt":"2023-01-13T06:22:36","slug":"solved-testing-if-a-link-is-a-youtube-link","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-testing-if-a-link-is-a-youtube-link\/","title":{"rendered":"[Solved] testing if a link is a youtube link."},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-27698555\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"27698555\" data-parentid=\"27698164\" data-score=\"-1\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>Though it would be better to add a clear question to the question, I just noticed the comment in this line of the provided code: <\/p>\n<pre><code>if(url.toLowerCase().indexOf(\"youtube\") &gt; 0)  \/\/ this is where my function fails.\n<\/code><\/pre>\n<p>You should check what <code>var url = $(\"#&lt;%=txtYoutubeLink.ClientID %&gt;\").val();<\/code> actually returns, because in case the url starts with youtube, the result of <\/p>\n<pre><code>url.toLowerCase().indexOf(\"youtube\")\n<\/code><\/pre>\n<p>is <code>0<\/code>.<br \/><code>indexOf()<\/code> does not check if a substring is contained in another string, but returns the position (starting at 0), in case the substring is contained, or <code>-1<\/code> in case the substring is not contained. Just adjust to <\/p>\n<pre><code>if(url.toLowerCase().indexOf(\"youtube\") &gt;= 0)\n<\/code><\/pre>\n<p>For reference: <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.mozilla.org\/en\/docs\/Web\/JavaScript\/Reference\/Global_Objects\/String\/indexOf\">https:\/\/developer.mozilla.org\/en\/docs\/Web\/JavaScript\/Reference\/Global_Objects\/String\/indexOf<\/a><\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved testing if a link is a youtube link. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Though it would be better to add a clear question to the question, I just noticed the comment in this line of the provided code: if(url.toLowerCase().indexOf(&#8220;youtube&#8221;) &gt; 0) \/\/ this is where my function fails. You should check what var url = $(&#8220;#&lt;%=txtYoutubeLink.ClientID %&gt;&#8221;).val(); actually returns, because in case the url starts with youtube, &#8230; <a title=\"[Solved] testing if a link is a youtube link.\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-testing-if-a-link-is-a-youtube-link\/\" aria-label=\"More on [Solved] testing if a link is a youtube link.\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[751,388,2696],"class_list":["post-30140","post","type-post","status-publish","format-standard","hentry","category-solved","tag-asp-net","tag-jquery","tag-youtube"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] testing if a link is a youtube link. - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-testing-if-a-link-is-a-youtube-link\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] testing if a link is a youtube link. - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Though it would be better to add a clear question to the question, I just noticed the comment in this line of the provided code: if(url.toLowerCase().indexOf(&quot;youtube&quot;) &gt; 0) \/\/ this is where my function fails. You should check what var url = $(&quot;#&lt;%=txtYoutubeLink.ClientID %&gt;&quot;).val(); actually returns, because in case the url starts with youtube, ... 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You should check what var url = $(\"#&lt;%=txtYoutubeLink.ClientID %&gt;\").val(); actually returns, because in case the url starts with youtube, ... 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