javascript - Check to see if a div exists -


i have following code: 

<html>     <head>         <script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>     </head> <body>     <span></span>      <div class="content" id="2">     <div class="reply"></div>     </div>      <div class="content" id="1">     </div>      <div class="content" id="3">         <div class"reply"></div>     </div>          <script>         var n = $( ".reply" ).length;          $( "span" ).text( "there " + n + " divs.");     </script> </body>  </html>

i trying write jquery script check individual divs unique id's see if contains "reply" div. have code see if "reply" div exists @ working. new jquery unsure how go this.

var n = $( ".reply" ).length;          $( "span" ).text( "there " + n + " divs.");

use #uniqueid .reply jquery selector:

alert("the id id '3' contains" + $("#3 .reply").length + ".reply divs.");

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