How to use the jsdom.env function in jsdom

else {
                            try {
                                var html = JSON.parse(stdout);
                            } catch(e) {
                                html = 'Parsing error: ' + e;
                            }
// PhantomJS output
        console.log(html);
// template render function
                            reqHandler(res, html);
                        }
                    });

// if ph == false (default) -> jsDom
            } else {
                jsdom.env(data.toString(), function (err, win) {
            //  jsdom.env(publicPath + '/' + urlPath, function (err, win) { // url mode
                    if (err) res.end('JSdom report error:\n ' + err);
                        else {
                            console.log('JSDOM', wrap);
                            var
                                doc = win.document,
                                html = {};

                            try {
                                html.title = doc.title;
                                html.meta = dom.getMeta(doc);
                                html.styles = dom.getHeadData(doc)[0];
                                html.scripts = dom.getHeadData(doc)[1];
                                html.source = dom.getSource(doc, id, wrap);
                            } catch (e) {
                                html.err = {

function parse_pages(info_page, sessions_page, callback) {
  if (typeof callback === 'undefined') {
    callback = function (err, infos) {};
  }

  info_page = utils.gb2312_to_utf8(info_page);
  sessions_page = utils.gb2312_to_utf8(sessions_page);

  var infos = {};

  // Parse info page.
  jsdom.env(info_page, function (err, window) {
    if (err) {
      console.error('Error while parsing usereg user page: %s', err);
      callback(err);
      return false;
    } else {
      // Parse data pairs.
      var all_infos = {};
      var data = window.document.getElementsByClassName('maintd');

      for (var i = 1; i < data.length; i += 2)
        all_infos[data[i-1].textContent.trim()] = data[i].textContent.trim();

      infos.usage = Number(/\d+/.exec(all_infos["使用流量(IPV4)"])[0]);
      infos.balance = Number(/\d+\.\d+/.exec(all_infos["帐户余额"])[0]);
    }
  });

var parseSpec = function(sections, pathToSpec) {
    var deferred = Q.defer();

    // Parsing spec with JSdom
    jsdom.env(
        'http://127.0.0.1:' + global.opts.core.server.port + pathToSpec + '?internal=true',
        ['http://127.0.0.1:' + global.opts.core.server.port + '/source/assets/js/modules/sectionsParser.js'],
        function (err, window) {
            if (err) {
                deferred.reject({
                    err: err,
                    msg: 'JSDOM error'
                });
                return;
            }

            var output = {};

            var SourceGetSections = window.SourceGetSections;

            var parser = new SourceGetSections();

var jsdom = require("jsdom");
var fs = require("fs");
var jalangi = !!process.argv[2];

var scripts = jalangi ?   ['../../../src/js/analysis.js', '../../../src/js/InputManager.js', '../../../node_modules/escodegen/escodegen.browser.js', '../../../node_modules/esprima/esprima.js', '../../../src/js/utils/astUtil.js', '../../../src/js/instrument/esnstrument.js', '../jquery-2.0.2_jalangi_.js'] : ['../jquery-2.0.2.js'];

jsdom.env(
  '',
  scripts,
  function (errors, window) {
	var markup = window.jQuery(
		"<div><div><p><span><b class="\&quot;a\&quot;">b</b></span></p></div></div>"
	),
	path = "";

    var tmp1 = markup.find("*");
    console.log(tmp1.length);
    debugger;
    var tmp2 = tmp1.filter("b");
    console.log(tmp2.length);

	markup.remove();

function createDOM(done) {
	jsdom.env(
		'',
		["http://code.jquery.com/jquery.js"],
		function (err, window) {
			global.document = window.document;
			global.window = window;
			global.$ = window.jQuery;
			done();
		}
	);
}

const targets = process.argv.slice(2).map(target => target.split(':'));

const prefixes = {
  cjs: 'module.exports = ',
  es: 'export default '
};

const comment = `/**
 * This file was automatically generated from \`build.js\`.
 * Do not manually edit.
 */

`;

jsdom.env('https://html.spec.whatwg.org/multipage/syntax.html', (err, window) => {
  if (err) {
    throw err;
  }
  const document = window.document;
  const codes = document.querySelector('dfn#void-elements')
              .parentNode
              .nextElementSibling
              .textContent
              .replace(/\s/gm,'')
              .split(",")
              .reduce((obj, code) => {
                obj[code] = true;
                return obj;
              }, {});

  for (const [file, format = 'cjs'] of targets) {

  return new Promise((resolve,reject)=>jsdom.env(source,[],(err,window)=>err&&reject(err)||resolve(window.document.querySelectorAll(selector))));
}

return new Promise((resolve, reject) => {
    env(html, [], (error, window) => {
      if (error) {
        return reject(error);
      }

      return resolve(window);
    });
  });
}

self.status = "fetching";

    if (cache[self.url]) {
      var cached = cache[self.url];
      self.title = cached.title;
      self.links = cached.links;
      self.favicon = cached.favicon;
      self.validate();
      self.grapher.addPages(self.links, self.url);
      self.status = "fetched";
      callback();
      return;
    }

    jsdom.env(self.url, [
      globals.JQUERY_URI
    ],
    function(errors, window) {
      if (!errors) {
        window.$("a[rel~=me]").each(function (i, elem) {
          if (elem.href.substring(0,1) !== '/') {
            self.links.push(elem.href);
          }
        });

        self.title = window.document.title;
        self.resolveFavicon(window);
        self.validate();
        self.grapher.addPages(self.links, self.url);
        self.status = "fetched";