d'oh! I see the problem: the second onRequest should read sendResponse
({url: localStorage["url"]}). Thanks, Yoanis!

On Dec 27, 7:51 pm, FractalBob <ruom...@gmail.com> wrote:
> My content script requests two strings from background.html:
>
> var subject = document.getElementById("subject");
> var body = document.getElementById("body");
>
> chrome.extension.sendRequest({name: "domain"},
>      function(response)
>      {
>      subject.setAttribute("value", response.domain + ": ");
>      });
>
> chrome.extension.sendRequest({name: "url"},
>      function(response)
>      {
>      body.defaultValue = "URL of last page visited: " + response.url;
>      });
>
> background.html earlier had saved the data to local storage:
>
>         localStorage["domain"] = site;
>         localStorage["url"] = tab.url;
>
> and waits for the requests from the content script:
>
> //Wait for request for the site value and URL from content script
> chrome.extension.onRequest.addListener(
>   function(request, sender, sendResponse)
>   {
>   sendResponse({domain: localStorage["domain"]});
>   });
>
> chrome.extension.onRequest.addListener(
>   function(request, sender, sendResponse)
>   {
>   sendResponse({domain: localStorage["url"]});
>   });
>
> For some reason, the content script receives the "domain" value OK,
> but displays "undefined" for the "url" value. TIA.

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