title: What function acts as .SelectMany() in jQuery?
body: <p>Let me explain more:</p>
  
  <p>we know that map function in jQuery acts as .Select() (as in LINQ).</p>
  
  <pre><code>$("tr").map(function() { return $(this).children().first(); }); // returns 20 tds
  </code></pre>
  
  <p>now the question is how can we have .SelectMany() in jQuery?</p>
  
  <pre><code>$("tr").map(function() { return $(this).children(); }); // returns 10 arrays not 20 tds!
  </code></pre>
  
  <p>here is my example in action: <a href="http://jsfiddle.net/8aLFQ/4/" rel="noreferrer">http://jsfiddle.net/8aLFQ/4/</a><br>
  "l2" should be 8 if we have selectMany.</p>
  
  <p>[NOTE] please don't stick to this example, above code is to just show what I mean by SelectMany() otherwise it's very easy to say $("tr").children();</p>
  
  <p>Hope it's clear enough.</p>