Node.js > Call function with button

[Junior Domingos]

 Does anyone know in Node.js to call an external file function by clicking a button in html?

[Aria Stewart]

On Saturday, September 3, 2016 at 12:05:41 AM UTC-4, Junior Domingos wrote:

 Does anyone know in Node.js to call an external file function by clicking a button in html?

Maybe. It depends on what you mean by 'external file function'.

If it's a commonjs module that is the external file function, then you can require it into an http server.

server.js:

var http = require('http');

var fs = require('fs');

var externalFunction = require('./externalfunction.js');

http.createServer(req, res) { 

   if (req.method == 'post') {

      externalFunction();

      res.end('ok');

   } else {

      res.setHeader('content-type: text/html');

      fs.createReadStream('button.html').pipe(res);

   }

}).listen(8080);

And some HTML:

button.html

<form action="." method=post>

   <button>Do the thing</button>

</form>

If you run that server script, it will listen on port 8080. http://localhost:8080/ should show the button, and if you click it, the server should call the function.