下边的示例演示如何在Background Page记录图标的点击次数：
manifest.json：
{
"name": "My First Extension",
"version": "1.0",
"description": "The first extension that I made.",
"background_page": "background.html",
"browser_action": {
"default_icon": "icon.png",
"popup": "popup.html"
}
}background.html：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>background.html</title>
</head>
<body>
<script language="JavaScript" type="text/javascript">
var Clicks = (function(){
var i = 0;
return function(){ return ++i; }
})();
</script>
</body>
</html>popup.html：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>popup.html</title>
</head>
<body>
<script language="JavaScript" type="text/javascript">
var winBackgroundPage = chrome.extension.getBackgroundPage();
if(winBackgroundPage)
document.write("Clicks:" + winBackgroundPage.Clicks());
</script>
</body>
</html>效果预览：
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