How to access node JS(javascript) variables in shell script file

I'm running shell script file from nodeJS file i need to send some parameters to shell script and use it in shell script

My js file `

var dbname = development.db.uri;
    console.log(dbname);
    var myscript = exec('sh ./scripts/mongo-backup.sh',+ dbname );
    myscript.stdout.on('data',function(data){
        console.log("!@#$%^&*&@#$%^&*$##$%^&*");
        console.log(data); // process output will be displayed here
    });
    myscript.stderr.on('data',function(data){
        console.log(data); // process error output will be displayed here
    });

and here is my shell script

#!/bin/bash
echo "Creating Database Backup"
#need to access dbname from JS FILE
MONGO_DATABASE= dbname 
APP_NAME="app-name"
USERNAME=$(sudo echo $USER)

`

via Srinivas