phonegap ajax call to express.js(node) - node.js

Question

I am new to phone gap , Trying to make Ajax call to my Node.js server but it is failing .
here is my node.js simple express code
Server.js file
var express = require('express')
,app = express()
app.get('/',function(req,res){
res.json('{fname:"fname",lname:"lname"}')
})
app.listen(process.env.PORT || 3015)
Here is my index.html ajax call using jquery
<script>
$(document).ready(function () {
$.ajax({
type: "GET",
url: "http://domainName:port/", //change according
success: function (data) {
alert(success)
},
error: function (e) {
alert('Error:');
}
});
})
</script>
Here is my config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<widget xmlns = "http://www.w3.org/ns/widgets"
xmlns:gap = "http://phonegap.com/ns/1.0"
id = "com.testAndroid2.firstApp2"
versionCode = "1"
version = "1.0.0" >
<!-- versionCode is Android only -->
<!-- version is in major.minor.patch format -->
<name>PhoneGap Example App</name>
<description>
An example for phonegap build app which wont show up in the playstore.
</description>
<author href="https://YourWebsite.com" email="yourEmail#goesHere.com">
Name Of The Author
</author>
<access origin="*" />
<platform name="android">
<allow-intent href="market:*" />
<access origin="*" />
<allow-intent href="*" />
<allow-navigation href="*" />
</platform>
</widget>
Ajax is failing when i build my application using phonegap build and run it on my phone , but same application is working fine in my browser of my PC (i.e there is not AJAX issue) .
Please let me know if i am missing any file in or something as i am completely new to phonegap . Any help would be appreciated .

Answer 1

There was missing Plugin (<plugin name="cordova-plugin-whitelist" source="npm" />) in Config.xml file
**Config.xml file should be like :**
<?xml version="1.0" encoding="UTF-8" ?>
<widget xmlns = "http://www.w3.org/ns/widgets"
xmlns:gap = "http://phonegap.com/ns/1.0"
id = "com.testAndroid4.firstApp4"
versionCode = "1"
version = "1.0.0" >
<!-- versionCode is Android only -->
<!-- version is in major.minor.patch format -->
<name>PhoneGap Example App</name>
<description>
An example for phonegap build app which wont show up in the playstore.
</description>
<author href="https://YourWebsite.com" email="yourEmail#goesHere.com">
Name Of The Author
</author>
<access origin="*" />
<plugin name="cordova-plugin-x-socialsharing" source="npm" />
<plugin name="cordova-plugin-whitelist" source="npm" />
</widget>