Ummm... variable l takes the values "TRACE", "DEBUG", ... from the names in
LEVEL

Then LEVEL[l] takes the values 10, 20, 30, ....

The values are converted to string

Then
Level["10"] = "TRACE";
Level["20"] = "DEBUG";
and so on

It's making the "inverse dictionary"

Angel "Java" Loepz
@ajlopez



On Wed, Jun 25, 2014 at 6:50 PM, Reza Razavipour <[email protected]>
wrote:

> I am seeing this code snippet in  a logging node module and I do not
> understand what it is doing?
> Can you explain?
>
> var LEVEL = {
>   "TRACE": 10,
>   "DEBUG": 20,
>   "INFO": 30,
>   "WARN": 40,
>   "ERROR": 50,
>   "FATAL": 60
> };
> for (var l in LEVEL) {
>   LEVEL[LEVEL[l].toString()] = l;
> }
>
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