Where to start.......

**Waha** · 04-03-2010, 06:41 AM

Depends how you wanna store it.
There's cookies which I don't recommend. localStorage which is pretty much the shiny new form of cookies. You can make a local database thing but I don't really know that API yet. Or lastly, you could send it to a server to store it, but that has privacy issues.

**couponmeup** · 04-14-2010, 04:53 PM

I'd like to build an array in the application if that's possible.
I read that there is a way to have a "Resident" page that is loaded while the plug in exists, but I am not sure how to use it.

**Waha** · 04-15-2010, 06:26 AM

A Background Page?

**couponmeup** · 04-27-2010, 07:07 AM

Thanks!
OK, I added a background page.
I am not sure how I communicate with it...
I have some javascript running when a URL matches a given pattern from a JS file.

I guess I need to store this globally, and call it from that javascript....
How do I make it so that the array init only runs on first run?

**couponmeup** · 04-27-2010, 07:53 AM

I put this into my js file and it dies on this line.....
var bg = chrome.extension.getBackgroundPage();

**Waha** · 04-27-2010, 06:24 PM

This explains how to communicate between background page and a content script.

**couponmeup** · 04-28-2010, 02:47 AM

Thanks for the pointer!
OK, I copied this into my JS content script:
chrome.extension.sendRequest({greeting: "hello"}, function(response) {
console.log(response.farewell);
});

Then I copied this into my background.html
<html>
<script>

chrome.tabs.getSelected(null, function(tab) {
chrome.tabs.sendRequest(tab.id, {greeting: "hello"}, function(response) {
console.log(response.farewell);
});
});

chrome.extension.onRequest.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"});
alert("blah");
} else {
sendResponse({}); // snub them.
}
});

</script>
</html>

However, nothing appears in the console when it is fired.....
Did I miss something?

**Waha** · 04-28-2010, 07:30 PM

The alert you have there is not going to work. They don't work from a background page. However, if you open the console on the page where the content script is executing (Ctrl+Shift+J) you should be able to see the logged message. If not, something is wrong with your page matching for that script in the manifest.

LinkBack

Thread Tools

Display

Tags for this Thread

Posting Permissions