Gmailの一番上にあるメールの件名を任意のサーバーへ送る

bookmarklet.js

javascript:(function(){var e=document.getElementById("canvas_frame").contentWindow.document.getElementsByClassName("BltHke nH oy8Mbf"),t;for(var i=0,l=e.length;i<l;i++){t=e[i];if(t.style.display!=="none")break}var s=t.getElementsByTagName("table")[1].getElementsByTagName("tr")[0].getElementsByTagName("td")[5].getElementsByTagName("span")[0].innerText;var x=/*@cc_on!@*/true?new XMLHttpRequest():new XDomainRequest();x.timeout=3000;x.ontimeout=function(){alert("timeout")};x.onerror=function(){alert("error")};x.onload=function(){alert(decodeURIComponent(x.responseText))};x.open("POST",prompt("Subject:"+s+"を送信するサーバを指定してください","http://echo.ww24.jp"),false);x.setRequestHeader("Content-Type","application\/x-www-form-urlencoded;charset=UTF-8");x.send("subject="+encodeURIComponent(s))})()

server.js

var http = require("http");

http.createServer(function (req, res) {
  res.writeHead("200", {
    "Access-Control-Allow-Origin": "*"
  });
  req.on("data", function (chunk) {
    res.write(chunk);
  });
  req.once("end", function () {
    res.end();
  });
}).listen(80);

source.js

// get subject
var d = document.getElementById("canvas_frame").contentWindow.document,
    elem = d.getElementsByClassName("BltHke nH oy8Mbf"),
    target;

for (var i = 0, l = elem.length; i < l; i++) {
  target = elem[i];
  if (target.style.display !== "none")
    break;
}

var subject = target.getElementsByTagName("table")[1].getElementsByTagName("tr")[0].getElementsByTagName("td")[5].getElementsByTagName("span")[0].innerText;

// XHR
var ajax = function (method, url, data, callback) {
  var xhr = /*@cc_on!@*/true ? new XMLHttpRequest() : new XDomainRequest();
  xhr.timeout = 3000;
  xhr.ontimeout = function () {
    alert("timeout");
  };
  xhr.onerror = function () {
    alert("error");
  };
  xhr.onload = function () {
    callback(xhr.responseText);
  };
  xhr.open(method, url, false);
  if (method === "POST")
    xhr.setRequestHeader("Content-Type", "application\/x-www-form-urlencoded; charset=UTF-8");
  xhr.send(data);
};

// request
url = prompt("Subject:" + subject + "を送信するサーバを指定してください", "http://echo.ww24.jp");
ajax("POST", url, "subject=" + encodeURIComponent(subject), function (data) {
  alert(decodeURIComponent(data));
});

テスト用の http://echo.ww24.jp ではserver.jsが動いています。

SOPを学ぶためのテストコード①