how to return result in phonegap javascript function?

Question

Hi I'm trying to return the result from the phonegap plugin method.

I'like to do the following code.

  function table(tableName)
  {
        var rowCount_i;
        return {
                 tableName : tableName,
                 rowCount : function(){
                 window.plugins.getRowCount(
                                   tableName,
                  function(r)
                  {
                         rowcount_i = r; 
                  }
                  function(e)
                  {
                          alert(e); 
                  }

        );
        return rowCount_i;

     }
 };

 }

When i'm tried to run the following code...

  var tbl = new table("psd-person");
  alert(tbl.rowCount);

And the result is Undefined..

Is there any way to return the result in rowCount Method or can you show this rowCount method with defferd concept?

Please help me out.. Thanks in advance

because the function you called (rowCount) dont return anything! — Cracker0dks
– Cracker0dks, Commented Nov 28, 2013 at 10:59
btw your return rowCount_i; is never called because of the return obove ;) — Cracker0dks
– Cracker0dks, Commented Nov 28, 2013 at 11:01
but i have returned rowCount_I which is having result object. — user2660469
– user2660469, Commented Nov 28, 2013 at 11:01
yes but you alert the result of the function not the object! object = alert(tbl); but that will not help you mutch — Cracker0dks
– Cracker0dks, Commented Nov 28, 2013 at 11:02

Cracker0dks · Accepted Answer · 2013-11-28 11:12:43Z

1

try it with callback:

function table(tableName)
{
  return {
    tableName : tableName,
    rowCount : function(callback){
      window.plugins.getRowCount(tableName,
        function(r)
        {
               rowcount_i = r; 
               callback(rowcount_i);
        }
        function(e)
        {
                alert(e); 
        });    
    }
  }
}

var tbl = new table("psd-person");
tbl.rowCount(function(rowcount_i) {
  alert(rowcount_i);
});

Not tested!

answered Nov 28, 2013 at 11:12

Cracker0dks

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13 Comments

Cracker0dks Over a year ago

you cant do it with return, because the plugin also give you a callback. In what way do you want achieve ? Whats your goal ?

user2660469 Over a year ago

My goal is function rowCount should return the result object.

Cracker0dks Over a year ago

with result object you mean the row count ?

user2660469 Over a year ago

if i do the following code, i did not get the correct result. rowCount : function() { return window.plugins.getRowCount(tableName, function(r) { rowcount_i = r; callback(rowcount_i); } function(e) { alert(e); });

Cracker0dks Over a year ago

callback is not defined in your code 2 comments above! get your callback like this ? pastebin.com/TSkvr1Wx

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