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POChrome extension - Localstorage not working
 

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    <p>I'm writing a Chrome extension that uses a content script to modify certain parts of a website. The content script worked fine until I tried to add an options page to my extension.</p> <p>Right now I'm using an options.html file to save user preferences to localstorage, as you can see here:</p> <pre><code> &lt;html&gt; &lt;head&gt;&lt;title&gt;Options&lt;/title&gt;&lt;/head&gt; &lt;script type="text/javascript"&gt; function save_options() { var select = document.getElementById("width"); var width = select.children[select.selectedIndex].value; localStorage["site_width"] = width; } function restore_options() { var fwidth = localStorage["site_width"]; if (!fwidth) { return; } var select = document.getElementById("width"); for (var i = 0; i &lt; select.children.length; i++) { var child = select.children[i]; if (child.value == fwidth) { child.selected = "true"; break; } } } &lt;/script&gt; &lt;body onload="restore_options()"&gt; Width: &lt;select id="width"&gt; &lt;option value="100%"&gt;100%&lt;/option&gt; &lt;option value="90%"&gt;90%&lt;/option&gt; &lt;option value="80%"&gt;80%&lt;/option&gt; &lt;option value="70%"&gt;70%&lt;/option&gt; &lt;/select&gt; &lt;br&gt; &lt;button onclick="save_options()"&gt;Save&lt;/button&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>I also have a background.html file to handle the communication between the content script and the localstorage:</p> <pre><code>&lt;html&gt; &lt;script type="text/javascript"&gt; chrome.extension.onRequest.addListener(function(request, sender, sendResponse) { if (request.method == "siteWidth") sendResponse({status: localStorage["site_width"]}); else sendResponse({}); }); &lt;/script&gt; &lt;/html&gt; </code></pre> <p>Then there's the actual content script that looks like this:</p> <pre><code>var Width; chrome.extension.sendRequest({method: "siteWidth"}, function(response) { width = response.status; }); </code></pre> <p>None of that code actually works. It looks solid enough to me but I'm not a very experienced programmer so I might be wrong.</p> <p>Could someone explain localstorage to me in layman's terms?</p>
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