I need to randomly generate objectid in node js.Is there is any way to create.
If you mean a MongoDB ObjectID, try this:
var ObjectID = require('mongodb').ObjectID;
var objectId = new ObjectID();
Let me know if this is what you're looking for.
// On top of your script, or whatever
var crypto = require('crypto');
// wherever you want
function randomObjectId() {
return crypto.createHash('md5').update(Math.random().toString()).digest('hex').substring(0, 24);
}