how do i run a program on sublime text code example

Example 1: how to run your code in sublime text

Step1: Go to tool this is loacted at the top 
Step2: click build 

Shorcut: a shortcut to run it is ctrl+b

Example 2: how do i run code in sublime text

for javascipt, command B doesn't seem to work for me.
It does work for python programmers though. To code, 
I use Processing.