theirf/gmail.js

## gmail.js
<html>
  <head>
    <meta http-equiv="Content-type" content="text/html;charset=UTF-8">
    <script type="text/javascript">
      var CLIENT_ID = '*************************************.apps.googleusercontent.com';
      var SCOPES = ['https://www.googleapis.com/auth/gmail.readonly'];
      var USER = 'me';

      /**
       * Called when the client library is loaded to start the auth flow.
       */
      function handleClientLoad() {
        window.setTimeout(checkAuth, 1);
      }

      /**
       * Check if the current user has authorized the application.
       */
      function checkAuth() {
        gapi.auth.authorize(
            {'client_id': CLIENT_ID, 'scope': SCOPES, 'immediate': true},
            handleAuthResult);
      }

      /**
       * Called when authorization server replies.
       *
       * @param {Object} authResult Authorization result.
       */
          var threadID;
      function handleAuthResult(authResult) {
        var authButton = document.getElementById('authorizeButton');
        var outputNotice = document.getElementById('notice');
        authButton.style.display = 'none';
        outputNotice.style.display = 'block';
        if (authResult && !authResult.error) {
          // Access token has been successfully retrieved, requests can be sent to the API.
          gapi.client.load('gmail', 'v1', function() {
            listThreads(USER, function(resp) {
                                for(var i = 0; i<5; i++){
                                        getThreads(USER, resp["threads"][i]["id"], function(response){
                                                console.log(response);
                                        });
                                        getThreads("me", "THREAD_ID", function (dataMessage) {
                                                var temp = dataMessage.messages[0].payload.headers;
                                            $.each(temp, function (j, dataItem) {
                                                        if (dataItem.name == "From") {
                                                                console.log(dataItem.value);
                                                }
                                            });
                                        });
                                }
              });
            });
        } else {
          // No access token could be retrieved, show the button to start the authorization flow.
          authButton.style.display = 'block';
          outputNotice.style.display = 'none';
          authButton.onclick = function() {
              gapi.auth.authorize(
                  {'client_id': CLIENT_ID, 'scope': SCOPES, 'immediate': false},
                  handleAuthResult);
          };
        }
      }


      /**
       * Get a page of Threads.
       *
       * @param  {String} userId User's email address. The special value 'me'
       * can be used to indicate the authenticated user.
       * @param  {Function} callback Function called when request is complete.
       */

      function listThreads(userId, callback) {
        var request = gapi.client.gmail.users.threads.list({
          'userId': userId
        });
        request.execute(callback);
      }
          function getThreads(userId, id){
                  var request = gapi.client.gmail.users.threads.get({
                          'userId':userId,
                          'id':id
                  });
          }

    </script>
    <script type="text/javascript" src="https://apis.google.com/js/client.js?onload=handleClientLoad"></script>
  </head>
  <body>
    <input type="button" id="authorizeButton" style="display: none" value="Authorize" />
    <p id="notice" style="display: none">check browser console for output</p>
  </body>
</html>
	<html>
	<head>
	<meta http-equiv="Content-type" content="text/html;charset=UTF-8">
	<script type="text/javascript">
	var CLIENT_ID = '*************************************.apps.googleusercontent.com';
	var SCOPES = ['https://www.googleapis.com/auth/gmail.readonly'];
	var USER = 'me';

	/**
	* Called when the client library is loaded to start the auth flow.
	*/
	function handleClientLoad() {
	window.setTimeout(checkAuth, 1);
	}

	/**
	* Check if the current user has authorized the application.
	*/
	function checkAuth() {
	gapi.auth.authorize(
	{'client_id': CLIENT_ID, 'scope': SCOPES, 'immediate': true},
	handleAuthResult);
	}

	/**
	* Called when authorization server replies.
	*
	* @param {Object} authResult Authorization result.
	*/
	var threadID;
	function handleAuthResult(authResult) {
	var authButton = document.getElementById('authorizeButton');
	var outputNotice = document.getElementById('notice');
	authButton.style.display = 'none';
	outputNotice.style.display = 'block';
	if (authResult && !authResult.error) {
	// Access token has been successfully retrieved, requests can be sent to the API.
	gapi.client.load('gmail', 'v1', function() {
	listThreads(USER, function(resp) {
	for(var i = 0; i<5; i++){
	getThreads(USER, resp["threads"][i]["id"], function(response){
	console.log(response);
	});
	getThreads("me", "THREAD_ID", function (dataMessage) {
	var temp = dataMessage.messages[0].payload.headers;
	$.each(temp, function (j, dataItem) {
	if (dataItem.name == "From") {
	console.log(dataItem.value);
	}
	});
	});
	}
	});
	});
	} else {
	// No access token could be retrieved, show the button to start the authorization flow.
	authButton.style.display = 'block';
	outputNotice.style.display = 'none';
	authButton.onclick = function() {
	gapi.auth.authorize(
	{'client_id': CLIENT_ID, 'scope': SCOPES, 'immediate': false},
	handleAuthResult);
	};
	}
	}


	/**
	* Get a page of Threads.
	*
	* @param {String} userId User's email address. The special value 'me'
	* can be used to indicate the authenticated user.
	* @param {Function} callback Function called when request is complete.
	*/

	function listThreads(userId, callback) {
	var request = gapi.client.gmail.users.threads.list({
	'userId': userId
	});
	request.execute(callback);
	}
	function getThreads(userId, id){
	var request = gapi.client.gmail.users.threads.get({
	'userId':userId,
	'id':id
	});
	}

	</script>
	<script type="text/javascript" src="https://apis.google.com/js/client.js?onload=handleClientLoad"></script>
	</head>
	<body>
	<input type="button" id="authorizeButton" style="display: none" value="Authorize" />
	<p id="notice" style="display: none">check browser console for output</p>
	</body>
	</html>