How to send a large amount of data faster ?

Hi - i tried the code above on the linux version of espruino.

In the browser - I get an empty page, and only one line of output in the console:

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v94.213 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
>
=undefined
n= 5 t: 0.001 sec
t 0.10073614120 l 0
[WS] "Hello to Espruino!"
> 

How are you getting mutiple lines output?