In [1]:

    

var msg = ["Hello", "World!"].join(", ");


    

    
Out[1]:




undefined

In [2]:

    

msg


    

    
Out[2]:




'Hello, World!'

In [3]:

    

console.log(msg);


    

    




Hello, World!






    
Out[3]:




undefined

In [4]:

    

console.error(msg);


    

    




Hello, World!






    
Out[4]:




undefined

In [5]:

    

throw new Error("Oh noes!");


    

    




Error: Oh noes!
    at evalmachine.<anonymous>:1:7
    at run ([eval]:180:19)
    at onMessage ([eval]:63:41)
    at process.EventEmitter.emit (events.js:98:17)
    at handleMessage (child_process.js:318:10)
    at Pipe.channel.onread (child_process.js:345:11)