google chrome extension does not work - google-chrome-extension

Question

It is a simple extension that invokes Xmlhttprequest to send POST data to a form. I have also added simple message boxes at beginning/end of the js code... The code is being invoked from a background page and correct permissions have been granted in manifest.json.
However when I click on the button for this extension, nothing is happening.
Given below is the js code for the extension-
alert("Beginning of code block");
var xmlhttp;
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("POST","http://taurusarticlesubmitter.appspot.com/sampleform",true);
xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");
xmlhttp.send("name=Arvind&description=Test description&email=arvind#taurusseo.com");
alert("End of code block");
Also, I added the following code to background.html--
<script>
// Called when the user clicks on the browser action.
chrome.browserAction.onClicked.addListener(function(tab) {
chrome.tabs.executeScript(
null, {file: "cdr.js"});
});
chrome.browserAction.setBadgeBackgroundColor({color:[0, 200, 0, 100]});
</script>
Finally, given below is my manifest.json--
{
"name": "My Second Extension",
"version": "1.0",
"background_page": "background.html",
"description": "The second extension that I made.",
"browser_action": {
"name": "Data in iframe",
"default_icon": "icon.png"
},
"permissions": [ "tabs",
"bookmarks",
"http://*/*",
"https://*/*",
"unlimitedStorage"
]
}

Answer 1

I assume that your first code block is cdr.js? Then you are not running it from the background page. Instead your background page loads a content script that tries to send a request. Content scripts run with the privileges of the page that they have been injected into. So if that page doesn't have privileges to send a request to taurusarticlesubmitter.appspot.com then the content script won't have the necessary privileges either.
If your content script needs to perform a privileged action (like sending a request to a third-party page) it should send a message to the background page and the background page will have to do it.