how to use ajax post to local sever?

Trying to do my first nodejs project.

I have build a web-based sever using Nodejs, which runs at localhost:3000/home.

Then I use cordova built an android app and run on a emulator. I try to sent the query to the sever and get the search results back to show on the app. However, I get problems in using ajax and I have tried many expressions of the url, it all came out: file not found.

The project hierarchy:

post function in homecontroller.js(using express and ejs)

  app.post('/home', urlencodedParser, function(req, res) {
         var rsults = [];
         var pname = req.body.player_name;
         var tname = req.body.team_name;
         results[] = searchdatabase(pname,tname);
        res.render('home', {results: results});

in the app: index.html

<form>
<input type="text" class="form-control" id="player_name"name="player_name">

<input type="text" class="form-control" id="team_name" name="team_name">

<button type="submit" class="btn btn-info" onclick="search">Search</button>

<script>
  function search(){
  var pname = $("[name='player_name']").val();
  var tname = $("[name='team_name']").val();

  jQuery.ajax({
     type: "POST",
     url: "http://localhost:3000/home",
     data: '{"pname": "pname", "tname": "tname"}',
     dataType: "json",
     cache: false,
     sucess: function(response)
     {alert("sent");}
     })
     }
</script>
</form>

This code is poor. Maybe what I wrote in sever cannot corresponding to the ajax requst from the app or I am doing wrong with the ajax function. Please suggest me a right presentation to achieve the purpose.

ps. the web sever runs well.

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