A api example for node.js http request.

cc_router.js

var CG = require('../closure-google');
module.exports = function(app){
  app.get('/',function(req,res){
    res.render('index', {
      title: 'Express',
      output: app.get('data') || ''
    });
  });
   app.post('/',function(req,res,next){
     var code = req.body.origin_code;     
     var C =  new CG();
     C.postCode(code,function(data){        
         app.set('data', eval('('+ data +')') );
         return res.redirect('/');
     });
  });
}

closure-google.js

var querystring = require('querystring');
var http = require('http');

var Transform = function(){  
};

Transform.prototype = {
  constructor: Transform,
  postCode: function(code,cb){
    // Build the post string from an object
    var post_data = querystring.stringify({
        'compilation_level' : 'SIMPLE_OPTIMIZATIONS',
        'output_format': 'json',
        'output_info': 'compiled_code',
        'warning_level' : 'QUIET',
        'js_code' : code
    });
   
    // An object of options to indicate where to post to
    var post_options = {
        host: 'closure-compiler.appspot.com',
        port: '80',
        path: '/compile',        
        method: 'POST',
        headers: {
            'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
            'Content-Length': post_data.length
        }
    };
    // Set up the request
    var req = http.request(post_options, function(res) {
        var datas = '';
        res.setEncoding('utf8');
        res.on('data', function(chunk){
           datas += chunk;   
        });
        res.on('end', function(){  
           cb(datas);
        });   
    });
    
    req.on('error', function(e) {
      console.log('problem with request: ' + e.message);
    });
    // post the data
    req.write(post_data);
    req.end();
   }
}
module.exports = Transform;