Is there a way to print dynamic variables?

Question

I am coding in node.js atm. I need to create a dynamic variable and invoke it.

e.g.:

username = 'im_a_user';

global['ws[' + username + ']'] = ws; //(yes, i want to store the connection with ws module)

but

ws[im_a_user].send('blabla');

doesn't work and node shuts down. So I want to know how global['ws[' + username + ']'] looks like for debbuging.

Do you know how I can print it - or even better, why im_a_user in ws[im_a_user].send('blabla'); isn't defined?

Thanks for your time!

`im_a_user` is not the variable name you want to use, wrap it with quotes, or use the previously defined variable `username`. — Teemu, Feb 18 '16 at 18:19
*facepalm* - the quotes... It all makes sence now :D! It worked for me. You don't know how happy I am. Thx a lot - I mean A LOT xD — dunnohowishouldnamemyself, Feb 18 '16 at 18:31
Additionally, the dot notation will also work: `ws.im_a_user.send(...);`. — Teemu, Feb 18 '16 at 18:34

score 0 · Answer 1 · answered Feb 18 '16 at 19:08

Accessing object property is possible with brackets, but you have to give it a valid expression: a string literal or a variable. Looks like you are referencing a variable that is not defined. That's where Node chokes.

So try either with a variable that is defined

var key = 'im_a_user'
ws[key].send('blabla');

or a string literal

ws['im_a_user'].send('blabla');

Is there a way to print dynamic variables?

1 Answers1