如何从函数node.js内部使变量全局化？

Question

i am trying to make this snmp variable global so i can save it in my mongoose database but i can not get it working, i have tried to declaring it as global and the window.data way but does not want to console.log outside my function. i am sure it is just a small thing but would greatly appreciate one of you guys taking a minute out of your day.

thanks in advance

session.get({ oid: [2, 8, 0] }, function(err, varbinds) {
  var vb;
  if (err) {  
    console.log(err);
  } else {
    vb = varbinds[0];  
  }
  console.log('The system description is "' + vb.value + '"');
  session.close();
});

Answer 1

You can use Node.js global variable like so:

GLOBAL.window = {};  // creates a global variable "window"

Global Objects Node.js