server.js

var express = require("express");
var app =express();
var oembed=require("oembed-auto");
var bodyParser = require("body-parser");

app.use(express.static(__dirname + '/js'));
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());

app.get('/',function(req,res,next){
  res.sendFile(__dirname + '/index.html');
});

app.post('/get_meta',function(req,res){
    oembed(req.body.data, function(error, result) {
        if (error)
            res.json({"error" : true,"link" :req.body.data});
        else
            res.json(result);
    });
});

app.listen(3000,function(){
  console.log("We are listening at 3000");
});