I found that there's an experimental clipboard class. But it works only in dev channel, right? Any idea how I can copy the text?
Athena
In your content script, have this:
// step 1: get the text you mean to copy
// (actual implementation not included)
// step 2: send it to your background page
chrome.extension.sendRequest({ text: "text you want to copy" });
In your background page, have this:
// step 3: set up your background page HTML
// and
<html>
<head>
<script type="text/javascript">
chrome.extension.onRequest.addListener(function (msg, sender, sendResponse) {
var textarea = document.getElementById("tmp-clipboard");
// now we put the message in the textarea
textarea.value = msg.text;
// and copy the text from the textarea
textarea.select();
document.execCommand("copy", false, null);
// finally, cleanup / close the connection
sendResponse({});
});
</script>
</head>
<body>
<textarea id="tmp-clipboard"></textarea>
</body>
</html>
来源：https://stackoverflow.com/questions/5235719/how-to-copy-text-to-clipboard-from-a-google-chrome-extension