title: How to create a like button with node js express app?
body: <p>Im building a web page with node,express and mongodb.
  Im trying to make a like button, but the problem is I cant pass a variable value from my ejs to my server side. how can I do that? here's what I've tried
  Exemple</p>
  
  <pre><code>Html
   &lt;div class="thumbnail"&gt;
             &lt;div class="caption"&gt;
                    &lt;strong  id="Title"&gt;&lt;%=video.title %&gt; &lt;/strong&gt;
                 &lt;button id="like" value="Like" type="submit"&gt; 
                &lt;script&gt;
                       var videoId =&lt;%= video._id %&gt;;
                   $('#like').click(function(){
                   $.post('/like/'+videoId);
                 });
              &lt;/script&gt;      
  </code></pre>
  
  <p>Server side</p>
  
  <pre><code>    router.post('/like/:videoId', function (req, res) {
      var test = req.params.videoId;
      console.log("works");
      console.log(test);
  
       });
  </code></pre>
  
  <p>thanks in advance</p>