chrome.tabs open function

getTabs.js

var getTabs = function(urlMatch, callback) {
    var tabs = [];

    chrome.tabs.query({
        status: 'complete'
    }, function(results) {
        for (var i = results.length; i--;) {
            if (results[i].url.indexOf(urlMatch) !== -1) {
                tabs.push(results[i].id);
            }
        }

        callback(tabs);
    });
};

getTabsExample.js

getTabs('google.com/search', function(tabs) {
    console.log(tabs);
};

injectInTab.js

var injectInTab = function(tabIds) {
    if (!Array.isArray(tabIds)) {
        tabIds = [tabIds];
    }

    for (var i = tabIds.length; i--;) {
        chrome.tabs.executeScript(tabIds[i], {file: '/script.js'});
        chrome.tabs.insertCSS(tabIds[i], {file: '/style.css'});
    }
};

manifest.json

{
    "permissions": [
        "tabs"
    ]
}

tabEvents.js

var addTabListeners = function(urlMatch) {
    chrome.tabs.onCreated.addListener(function(result) {
        if (result.url.indexOf(urlMatch) !== -1) {
            console.log(result.id);
        }
    });

    chrome.tabs.onUpdated.addListener(function(result) {
        if (result.url.indexOf(urlMatch) !== -1) {
            console.log(result.id);
        }
    });
};