app.js

var express = require('express')
  , cons = require('consolidate')
  , jade = require('jade')
  , path = require('path')
  , fs = require('fs')

var app = express()

app.engine('jade', cons.jade)
app.set('views', path.join(__dirname, 'views'))
app.set('view engine', 'jade')

var temp = {
    s1: jade.compile(fs.readFileSync(path.join(__dirname, 'views', 's1.jade')))
  , s2: jade.compile(fs.readFileSync(path.join(__dirname, 'views', 's2.jade')))
}

var getData = {
    d1: function (fn) {
        setTimeout(fn, 8000, null, { content: "Hello, I'm the first section." })
    }
  , d2: function (fn) {
        setTimeout(fn, 5000, null, { content: "Hello, I'm the second section." })
    }
}

var static = express.static(path.join(__dirname, 'static'))
app.use('/static', function (req, res, next) {
  setTimeout(static, 2000, req, res, next)
})
var resProto = require('express/lib/response')
resProto.pipe = function (selector, html, replace) {
  this.write('<script>' + '$("' + selector + '").' +
    (replace === true ? 'replaceWith' : 'html') +
    '("' + html.replace(/"/g, '\\"').replace(/<\/script>/g, '<\\/script>') +
    '")</script>')
}
function PipeName (res, name) {
  res.pipeCount = res.pipeCount || 0
  res.pipeMap = res.pipeMap || {}
  if (res.pipeMap[name]) return
  res.pipeCount++
  res.pipeMap[name] = this.id = ['pipe', Math.random().toString().substring(2), (new Date()).valueOf()].join('_')
  this.res = res
  this.name = name
}
resProto.pipeName = function (name) {
  return new PipeName(this, name)
}
resProto.pipeLayout = function (view, options) {
  var res = this
  Object.keys(options).forEach(function (key) {
    if (options[key] instanceof PipeName) options[key] = '<span id="' + options[key].id + '"></span>'
  })
  res.render(view, options, function (err, str) {
    if (err) return res.req.next(err)
    res.setHeader('content-type', 'text/html; charset=utf-8')
    res.write(str)
    if (!res.pipeCount) res.end()
  })
}
resProto.pipePartial = function (name, view, options) {
  var res = this
  res.render(view, options, function (err, str) {
    if (err) return res.req.next(err)
    res.pipe('#'+res.pipeMap[name], str, true)
    --res.pipeCount || res.end()
  })
}
app.use(function (req, res) {
  res.pipeLayout('layout', {
      s1: res.pipeName('s1name')
    , s2: res.pipeName('s2name')
  })
  getData.d1(function (err, s1data) {
    res.pipePartial('s1name', 's1', s1data)
  })
  getData.d2(function (err, s2data) {
    res.pipePartial('s2name', 's2', s2data)
  })
})

app.listen(3000)