contractor.js

var express = require('express');
var app = express();

express.route('/contractor');

app.post('/contractor', function(req, res){
  var contractor = {
	id : document.getElementById("id_field").value,
    name : document.getElementById("name_field").value,
    birthDate : document.getElementById("birthDate_field").value,
    gender : document.getElementById("gender_field").value
    email : document.getElementById("email_field").value
    login : document.getElementById("login_field").value
    }}
    express.write(JSON.stringify(contractor));
    express.send();
});
app.get('/contractor', function(req, res){
    res.send('id: ' + req.query.id);

    document.getElementById('Id').value= req.query.id;
    document.getElementById("name_field").value = req.query.name;
    document.getElementById("birthDate_field").value = req.query.birthdate;
    document.getElementById("gender_field").value = req.query.gender;
    document.getElementById("email_field").value = req.query.email;
    document.getElementById("login_field").value = req.query.login;
    
});

infrastructure.js

var express = require('express');
var app = express();

express.route('/infraestructure');

app.post('/infraestructure', function(req, res){
  var infraestructure = {
	id : document.getElementById("id_field").value,
    type : document.getElementById("type_field").value,
    illumination : document.getElementById("illumination_field").value,
    buffet : document.getElementById("buffet_field").value
    chairs : document.getElementById("chairs_field").value
    tables : document.getElementById("tables_field").value
    ornament : document.getElementById("ornament_field").value
    midia_equipament : document.getElementById("midia_equipament_field").value
    }}
    express.write(JSON.stringify(contractor));
    express.send();
});
app.get('/infraestructure', function(req, res){
    res.send('id: ' + req.query.id);

    document.getElementById('Id').value= req.query.id;
    document.getElementById("type_field").value = req.query.type;
    document.getElementById("illumination_field").value = req.query.illumination;
    document.getElementById("buffet_field").value = req.query.buffet;
    document.getElementById("chairs_field").value = req.query.chairs;
    document.getElementById("tables_field").value = req.query.tables;
    document.getElementById("ornament_field").value = req.query.ornament;
    document.getElementById("midia_equipament_field").value = req.query.media_equipament;

});

participant.js

var express = require('express');
var app = express();

express.route('/participant');

app.post('/participant', function(req, res){
  var infraestructure = {
	id : document.getElementById("id_field").value,
    name : document.getElementById("name_field").value,
    cpf : document.getElementById("cpf_field").value,
    telephone : document.getElementById("telephone_field").value
    birth_date : document.getElementById("birth_date_field").value
    gender : document.getElementById("gender_field").value
    email : document.getElementById("email_field").value
    }}
    express.write(JSON.stringify(contractor));
    express.send();
});
app.get('/participant', function(req, res){
    res.send('id: ' + req.query.id);

    document.getElementById("id_field").value = req.query.id;
    document.getElementById("name_field").value = req.query.name;
    document.getElementById("cpf_field").value = req.query.cpf;
    document.getElementById("telephone_field").value = req.query.telephone;
    document.getElementById("birth_date_field").value = req.query.birth_date;
    document.getElementById("birth_date_field").value = req.query.gender;
    document.getElementById("email_field").value = req.query.email;

});