gistfile1.js

var page = new WebPage(), testindex = 0, loadInProgress = false;

page.onConsoleMessage = function(msg) {
  console.log(msg);
};

page.onLoadStarted = function() {
  loadInProgress = true;
  console.log("load started");
};

page.onLoadFinished = function() {
  loadInProgress = false;
  console.log("load finished");
};

var steps = [
  function() {
    //Load Login Page
    page.open("https://site/login.html");
  },
  function() {
    //Enter Credentials

    page.evaluate(function() {
      var inputElements = document.getElementsByTagName("input");
      inputElements["login"].value = "login";
      inputElements["passwd"].value = "pwd";
    });
  }, 
  function() {
    //Login
    page.evaluate(function() {
      //assuming there is only one form in the page
      //if not, just iterate through them and pick
      //the one matching a specific attribute 
      var loginForm = document.getElementsByTagName("form")[0];
      loginForm.submit();
    });
  }, 
  function() {
    // enter search criteria
    page.evaluate(function() {
      var inputElements = document.getElementsByTagName("input");
      inputElements['field'].value = "software engineer";   // search value
    });
  },
  function() {
    // perform search
    page.evaluate(function() {
      //assuming there is only one form in the page
      //if not, just iterate through them and pick
      //the one matching a specific attribute 
      var searchForm = document.getElementsByTagName("form")[0];
      searchForm.submit();
    });
  },
  function() {
    // Output content of page to stdout after form has been submitted
    page.includeJs("http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js", function() {
        console.log("this is results table: "+jQuery('#resultsTable').length);
        console.log(document.querySelectorAll('html')[0].outerHTML);
    });
  }
];


interval = setInterval(function() {
  if (!loadInProgress && typeof steps[testindex] == "function") {
    console.log("step " + (testindex + 1));
    steps[testindex]();
    testindex++;
  }
  if (typeof steps[testindex] != "function") {
    console.log("test complete!");
    phantom.exit();
  }
}, 50);

this demonstrates how the session persists within the same phantomjs page