How to send xhr.responseXML object from background.html to contentscript.js

I want to send the object returned by the xhr.responseXML statement from the background.html file to the contentscript.js file in my google chrome开发者_运维百科 extension so that I will be able to access/mosify that object in the content script.

Is this possible? If yes, how?

Thanks in advance.. :-)

In background page:

chrome.tabs.getSelected(null, function(tab) {
  chrome.tabs.sendRequest(tab.id, {greeting: "hello"});
});

in content script:

chrome.extension.onRequest.addListener(function(request, sender, sendResponse) {
    console.log("Received data:", request);
});

It is called message passing, you can read more about it here.