plusone.html

<style>
body {
  padding: 0;
  margin: 0;
  overflow:hidden;
}

#plusone {
  float: right;
}
</style>

<div id="plusone-div"></div>

<script type="text/javascript" src="https://apis.google.com/js/plusone.js">
  {"parsetags": "explicit"}
</script>

<script type="text/javascript">
var url = decodeURIComponent(location.search.slice(1));

/*
if(location.search){

  gapi.plusone.render("plusone-div", {
    size: "standard",
    count: "true",
    href: /chrome-extension/.test(url)?'https://chrome.google.com/webstore/detail/pfphgaimeghgekhncbkfblhdhfaiaipf':url
  })
}else{
  gapi.plusone.render("plusone-div", {
    size: "small",
    count: "false",
    href: "https://chrome.google.com/webstore/detail/pfphgaimeghgekhncbkfblhdhfaiaipf"
  })
}*/


gapi.plusone.render("plusone-div", {
    size: "small",
    count: "true",
    href: (location.search&&/http/.test(url))?url:"https://chrome.google.com/webstore/detail/pfphgaimeghgekhncbkfblhdhfaiaipf"
  })
</script>