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POContent Script and Background Communication
 

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    <p>I am looking to create an extension for a particular site to provide additional formatting and sharing options that they don't currently have.</p> <p>I am having issues getting things to communicate properly and there doesn't seem to be a clearly laid out example.</p> <p>Manifest:</p> <pre><code>{ "name": "Test", "description": "Testing.", "version": "1.0", "background_page": "background.html", "permissions": [ "tabs", "http://www.sitedomain.com/*" ], "content_scripts": [ { "matches": ["*://*.sitedomain.com/*"], "js": ["jquery.min.js", "test.js"], "css": ["test.css"] } ] } </code></pre> <p>Content Script:</p> <pre><code>$(document).ready(function () { alert('test js fired'); $("#ColumnContainer div.item").each(function () { $(this).css("background-color", "skyBlue"); var itemId = $(this).children("a.itemImage").attr("href"); $(this).children(".details").append("&lt;a href=\"javscript:void(false);\" onclick=\"gotoItem('" + itemId + "');\"&gt;Goto Item&lt;/a&gt;"); }); }); chrome.extension.onRequest.addListener(function (request, sender, sendResponse) { alert('listener request'); alert(request); }); </code></pre> <p>JavaScript of Background HTML:</p> <pre><code> chrome.tabs.onUpdated.addListener(function (tabId, changeInfo, tab) { if (changeInfo.status == "complete") { if (tab.url.indexOf("sitedomain.com") &gt; -1) { chrome.tabs.executeScript(null, {file: "test.js"}); } } }); chrome.tabs.sendRequest(tabId, request, responseCallback); function responseCallback() { alert('response callback'); } function gotoItem(itemId) { alert('goto Item - ' + itemId); } </code></pre> <p>The above code does append the link and change the styling on the client page when the <code>sitedomain.com</code> is loaded. However, I haven't had any luck getting the <code>gotoItem</code> method to fire, Chrome Dev Tools shows undefined. I have tried various combinations, but just can't quite grasp the listeners and requests yet.</p> <p>I would really like to see a clean sample that just shows how to call a method from each site.</p>
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