title: How does this code produce "I love you" without any characters or digits?
body: <p>Taken from - <a href="http://www.echojs.com/news/8518">http://www.echojs.com/news/8518</a> </p>
  
  <p>How does this produce <code>window.alert("I love you");</code>? I understand how it can obtain <code>I</code> from <code>Infinity</code>, that's about it</p>
  
  <pre><code>    $= ~[];    $={___:
     ++$,$$$$: (![]+"")[$],
      __$:++$,$_$_:(![]+"")
        [$],_$_:++$,$_$$:
          ({} + "")[$],
             $$_$
               :
  
  
         ($[$]+"")   [$],_$$:
       ++$,$$$_:(!""+"")[$],$__:
        ++$,$_$:++$,$$__:({}+"")     
         [$],$$_: ++$,$$$:++$,
           $___:++$,$__$:++$
            };$.$_ = ($.$_=
               $ + "")
                  [
  
  
               $.$_$]+      ($._$=
              $.$_[$.__$  ])+($.$$=(
             $.$+"")[$.__$])+((!$)+"")
             [$._$$]+($.__=$.$_[$.$$_
              ])+($.$=(!""+"")[$.__$
                ]) + ($._= (!""+"")                  
                 [ $._$_]) +$.$_
                    [ $.$_$ ]+
                      $.__+
  
  
              $._$+    $.$;
            $.$$=$.$+(!""+"")
          [$._$$]+$.__+$._+$.$+
          $.$$;$.$=($.___)[$.$_]
           [$.$_];$.$($.$($.$$+
             "\""+$.$_$_+(![]+
               "")[$._$_]+
                  $.$$$_+
                   "\\"+
  
  
          $.__$+    $.$$_+
        $._$_+$.__+"(\\\"\\"+
       $.__$+$.__$+$.__$+"\\"+
     $.$__+$.___+(![]+"")[$._$_]+
     $._$+"\\"+$.__$+$.$$_+$.$$_+
      $.$$$_+"\\"+$.$__+  $.___+
        "\\"+$.__$+$.$$$+$.__$+
          $._$+$._+".\\\"\\"+
            $.$__  +$.___+
              ")"+ "\"")
                ( ))(
                  );
  </code></pre>
  
  <p><a href="http://jsbin.com/OhisIQAW/1/edit">http://jsbin.com/OhisIQAW/1/edit</a></p>