nodejs with wrapping nodejs responce object

Question

I have "global" variable that can be called all over my nodejs program. I just want to wrap my response object into "global" variable.

i can render with this:

http.createServer(function (request, response) {
    response.writeHead(200, {'Content-Type': 'text/plain'});
    response.end('Hello World\n');
}).listen(8081);`

but with this not:

global.render : function(res,result){
  **res.writeHead(200,{'Content-Type': 'text/plain'});**
  res.end(''+ result);
}

Using;

global.render(res, 'this just in html');

This bold row gives me an error. Cant figure it out?

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. — baao, Apr 20 '18 at 19:53
Also worth reading: [Why are global variables considered bad practice?](https://stackoverflow.com/questions/10525582/why-are-global-variables-considered-bad-practice) — baao, Apr 20 '18 at 19:53
better quit using `http` package when You're going to make something big (: switch to any http framework: `connect`, `express`, `sails`, `koa` and delete Your question, it's tells about lack of JS knowledge — num8er, Apr 20 '18 at 20:51

score 0 · Accepted Answer · answered Apr 20 '18 at 20:48

Avoid using globals.

You may get in situation when some code can replace Your global variable/function/class.

So just make it like a module:

lib/render.js

module.exports = (res, body) => {
  res.writeHead(200,{'Content-Type': 'text/plain'});
  res.end(body);
}

and use it in Your code:

const render = require('./lib/render');

http.createServer((request, response) => {
    if (request.url === '/') {
      return render(response, 'Hello World');
    }
    render(response, 'URL: '+request.url);
}).listen(8081);

nodejs with wrapping nodejs responce object

1 Answers1