..:: Source code - 057wrapper_object.js ::..

/**
This code demonstrates that strings, numbers, and boolean
values behave like objects when you try to read the value of a property (or method)
from them. But if you attempt to set the value of a property, that attempt is silently
ignored: the change is made on a temporary object and does not persist.
The temporary objects created when you access a property of a string, number, or
boolean are known as wrapper objects, and it may occasionally be necessary to distin-
guish a string value from a String object or a number or boolean value from a Number
or Boolean object. 
 */

var s = "test"; //this is string

s.len = 4; //setting a property doesn't take effect

var t = s.len;
console.log(t); //returns undefined because s.len=4 doent work

..:: NodeJS Console - 057wrapper_object.js ::..

undefined

$ps -aux | grep node (list all node processes)
sasa        1194  0.5  0.5 1304900 82928 ?       Ssl  Oct24 540:37 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1208  0.4  0.4 1305000 74200 ?       Ssl  Oct24 390:24 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  0.9  0.6 11825640 114436 ?     Ssl  Oct24 911:26 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.6  0.6 11817016 100016 ?     Ssl  Oct24 615:15 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1255  0.8  0.5 1330860 84076 ?       Ssl  Oct24 838:55 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa        1257  0.4  0.4 1304664 74148 ?       Ssl  Oct24 397:31 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.4  0.3 1292844 60552 ?       Ssl  Oct24 390:01 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.1  2.8 12150496 459624 ?     Ssl  Oct24 3941:03 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  2.5  1.1 11877568 180496 ?     Ssl  Oct24 2454:48 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.3 1099400 64992 ?       Ssl  Dec28   4:29 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.3 1099520 64288 ?       Ssl  Dec28   4:28 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.3 1099268 64836 ?       Ssl  Dec28   4:29 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.3 1099496 64868 ?       Ssl  Dec28   4:31 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1099012 63452 ?       Ssl  Dec28   4:28 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.3 1099136 64952 ?       Ssl  Dec28   4:29 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1099368 64020 ?       Ssl  Dec28   4:23 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1099360 63036 ?       Ssl  Dec28   4:21 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.4  0.6 11699744 112644 ?     Ssl  Dec28   5:51 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.3 1099512 64352 ?       Ssl  Dec28   4:25 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1253781  0.3  0.3 1099104 63568 ?       Ssl  03:03   2:57 node /home/sasa/dex8/dex8-worker/starter.js
www-data 1315746  0.0  0.0   2608   596 ?        S    16:35   0:00 sh -c ps -aux | grep node
www-data 1315748  0.0  0.0   3304   712 ?        S    16:35   0:00 grep node
sasa     2628167  0.9  0.7 1176424 129892 ?      Ssl  Nov04 782:55 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.7  0.5 11801032 90796 ?      Ssl  Nov06 563:58 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11798920 84156 ?      Ssl  Nov06 397:28 node /home/sasa/@mikosoft/dodo-examples/server/index.js