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    copied!<p>This solution interprets the first option ("-- Select --") as invalid, independent of it's and the other options textual content.</p> <p>Tested with jQuery 1.8.1 and 2.0.3, with browsers Firefox 24.0/Linux, Opera 12.16/Linux, Chrome 29.0.1547.76/Linux.</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;Option select&lt;/title&gt; &lt;meta http-equiv="Content-Type" content="text/html; charset=utf-8"&gt; &lt;script type="text/javascript" src="PATH_TO_jQuery"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; function bothSelectsAreValid() { return $("#comType")[0].selectedIndex &gt; 0 &amp;&amp; $("#comDirection")[0].selectedIndex &gt; 0; } function setButtonVisibility() { if (bothSelectsAreValid()) $("#button_that_displays_only_when_both_selects_have_input").show(); else $("#button_that_displays_only_when_both_selects_have_input").hide(); } $(document).ready(function() { $("#comType, #comDirection").on('change', function() { setButtonVisibility(); }); setButtonVisibility(); // needed if browser presets the selected values on reload }); &lt;/script&gt; &lt;style type="text/css"&gt; #button_that_displays_only_when_both_selects_have_input { display : none; } &lt;/style&gt; &lt;/head&gt; &lt;body&gt; &lt;select id="comType"&gt; &lt;option selected="selected"&gt;-- Select --&lt;/option&gt; &lt;option&gt;Call&lt;/option&gt; &lt;option&gt;Fax&lt;/option&gt; &lt;option&gt;Email&lt;/option&gt; &lt;/select&gt; &lt;select id="comDirection"&gt; &lt;option selected="selected"&gt;-- Select --&lt;/option&gt; &lt;option&gt;Incoming&lt;/option&gt; &lt;option&gt;Outgoing&lt;/option&gt; &lt;/select&gt; &lt;a href="#" id="button_that_displays_only_when_both_selects_have_input"&gt;Next&lt;/a&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
 

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