json responce into a varibale

Question

my api gives me the json like following:-

 

{

   "url": "https://moviestarstorage.blob.core.windows.net/water/abhijeet.mp4" 

}

for this output i wrote the following code:-

 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>     

<div id="dropdown">    

     <span class="list">    

         <select id="itemList">

             <option value="select">Select</option>    

         @foreach (var item in Model)  

           {    

             <option value="@item">@item</option>     

        }    

         </select>  

</span>  

        <span class="button">   

          <button type="button" id="btn">Watermark</button> 

            <script type="text/javascript">

                 $(function () {                   

  $("#btn").bind("click", function () {        

                  var url = "http://104.211.243.204/?container=comedy-movies&blob=" + encodeURIComponent($("#itemList").val());          

               window.location.href = url;

                                    });

                  });

             </script>     

         </span > 

    </div >  

 this gives me output in json format as mentioned above.

Now i want to store the url value i.e  

"url": "https://moviestarstorage.blob.core.windows.net/water/abhijeet.mp4"  into a variable .How can it will done??

Please help me regarding this