gistfile1.txt

var page = require('webpage').create(),
    testindex = 0,
    loadInProgress = false;

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("http://www.sd.10086.cn/eMobile/qryBalance.action?menuid=qryBalance");
    },
    function() {
        page.evaluate(function(obj) {
            var form = document.getElementById("Form0");
            form.elements["mobileNum"].value = '手机号';
            form.elements["service_PWD"].value = '密码';
            //这里需要点选“服务密码”选项
            
            form.elements['button'].click();
            return document.title;
        });
        loadInProgress = true;
    },
    function() {
        page.render('login-succ.png');
    }
];

var interval = setInterval(function() {
    if (!loadInProgress && typeof steps[testindex] == "function") {
        steps[testindex]();
        testindex++;
    }
    if (typeof steps[testindex] != "function") {
        phantom.exit();
    }
}, 10);