JSONP request not working - json

Question

Hi i'm new to Sencha and i'm try to set json request data to filedset. But it does not work. Please help me i cannot find the error.
this is my json request data:
{"response":{"electric_current":103.7506250769956,"electric_power":120.62350489414762}}
And this is the code.
Ext.define('AIOS_vis.view.Main', {
extend: 'Ext.tab.Panel',
xtype: 'main',
requires: [
'Ext.TitleBar'
],
config: {
listeners: {
activate: function() {
alert('gr');
Ext.data.JsonP.request({
url: 'http://localhost:8080/mock/GetCtPwer.php',
method: 'POST'
callbackkey: 'callback',
params: {
tap_id: 1
},
scope: this, /// fix handler scope
callback: function (response, value, request) {
var wattComponent = Ext.getCmp('watt');
wattComponent.setValue(value.response.electric_power);
var ampereComponent = Ext.getCmp('ampere');
ampereComponent.setValue(value.response.electric_current);
},
failure: function (response, request) {
Ext.Msg.alert(response);
}
});
}
},
tabBarPosition: 'bottom',
items: [
{
title: 'Home',
iconCls: 'home',
styleHtmlContent: true,
scrollable: true,
items: [
{
docked: 'top',
xtype: 'titlebar',
title: 'Visual',
},
{
xtype: 'fieldset',
instructions: 'Last Update: 2014/02/06:12:45:23',
items: [
{
xtype: 'button',
text : 'current',
height: '40px',
},
{
xtype: 'textfield',
id: 'watt',
label: 'Wattage (W):',
text: '1890.9W'
}, {
xtype: 'textfield',
id: 'ampere',
label: 'Amperage (A):',
text: '18.91A'
}]
},
{
xtype :'titlebar',
style: 'background:#484848',
title : 'power</br>123.4Wh',
height: '100px'
}
]}
]
},
});

Answer 1

Change your webservice url to (for example) http://yoururl.com:8080/mock/GetCtPwer.php?jsonp=parseResponse
and make sure your webserice is responding this:
parseResponse({"response":{"electric_current":103.7506250769956,"electric_power":120.62350489414762}})
you can change "parseResponse" to whatever you want.