javascript - Communication between an express node server and its displaying html -

really fast, question may have been asked, not totally clear on terminology , have had no success when searching solution.

i attempting create simple web application can receive , post requests. then, take information receive these requests , use them in javascript file embedded in html displayed. think may more clear code. app.js:

var express = require('express'); var app = express(); var assert = require('assert');    app.use(express.static('javascript')); app.get('/', function(req, res) {     res.render('index.jade'); });  app.listen(3000); 

i able take information received or post request, in json format, , able use in javascript have linked index.jade. make matters more confusing in index.jade line is:

include map.html 

so ideally able information javascript in html file.

i want able pretty continuously update map.html using javascript based on frequent , post commands.

this simple solution, pretty new web application programming in general, , have been struggling problem. in advance, , ask if need clarification.

the way want able call endpoint (lets assume /awesome) pass info , write javascript file can reference in html.

something below write main.js file in public folder. can make write whatever want.

var fs = require('fs'); fs.writefile("/public/main.js", "console.log('hello!')", function(err) { if(err) {     return console.log(err); } console.log("the file saved!"); });  

you can reference /public/main.js in html.

check that: writing files in node.js

if misunderstood intentions, apologies. :)