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POchrome extension message passing no response
 

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  1. POchrome extension message passing no response
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    <p>I'm working on a pretty simple browser extension, but can't get the message passing to work: I can send messages, but the response is never delivered!</p> <p>My code: Its mostly just a copy from the browserActions tutorial, contentscripts tutorial (manifest) and message-passing api definition. </p> <p>manifest.json:</p> <pre><code>{ "manifest_version":2, "name": "FUN SCRIPT", "version": "1", "description": "THIS IS SOME FUN SCRIPT", "browser_action": { "name": "Fun", "icons": ["icon.png"], "default_icon": "icon.png", "default_popup": "popup.html" }, "content_scripts": [ { "js": [ "jquery.js", "background.js" ], "matches": [ "http://*/*", "https://*/*"] }], } </code></pre> <p>background.js</p> <pre><code>chrome.runtime.onMessage.addListener( function(request, sender, sendResponse) { console.log(sender.tab ? "from a content script:" + sender.tab.url : "from the extension"); if (request.greeting == "hello") sendResponse({farewell: "goodbye"}); }); </code></pre> <p>popup.js</p> <pre><code>document.addEventListener('DOMContentLoaded', function () { chrome.tabs.query({active: true, currentWindow: true}, function(tabs) { chrome.tabs.sendMessage(tabs[0].id, {greeting: "hello"}, function(response) { console.log(response.farewell); }); }); }); </code></pre> <p>popup.html</p> <pre><code>&lt;!doctype html&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;Getting Started Extension's Popup&lt;/title&gt; &lt;style&gt; body { min-width: 357px; overflow-x: hidden; } img { margin: 5px; border: 2px solid black; vertical-align: middle; width: 75px; height: 75px; } &lt;/style&gt; &lt;script src="popup.js"&gt;&lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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