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.
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