..:: 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        1197  1.2  0.6 1325404 101488 ?      Ssl  Oct18 403:41 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1211  7.0  0.7 11845376 120172 ?     Ssl  Oct18 2364:06 node /home/sasa/dex8/dex8-api/starter.js
sasa        1218  0.4  0.5 11801072 82624 ?      Ssl  Oct18 150:53 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1219  0.7  0.6 11819840 103048 ?     Ssl  Oct18 267:09 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1232  0.4  0.5 11809724 92916 ?      Ssl  Oct18 157:22 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1248  0.6  0.5 1332152 82972 ?       Ssl  Oct18 217:54 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa        1274  0.3  0.4 1319044 79576 ?       Ssl  Oct18 106:18 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1277  0.3  0.3 1295632 63016 ?       Ssl  Oct18 104:37 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1337  0.6  0.7 1168120 118884 ?      Ssl  Oct18 234:04 node /home/sasa/voovuu/voovuu-api/starter.js
sasa        1385  4.0  4.5 12433292 744568 ?     Ssl  Oct18 1349:46 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1387  0.3  0.4 11797708 80860 ?      Ssl  Oct18 116:41 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa        1457  0.3  0.3 1100896 64044 ?       Ssl  Oct18 106:27 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1458  0.3  0.4 22278572 77316 ?      Ssl  Oct18 108:39 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1514  0.3  0.3 1101284 64784 ?       Ssl  Oct18 106:05 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1515  0.3  0.3 1101156 64564 ?       Ssl  Oct18 105:48 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1593  0.3  0.3 1100896 65092 ?       Ssl  Oct18 106:23 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1595  0.3  0.4 1101152 65736 ?       Ssl  Oct18 106:06 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1660  0.3  0.3 1101296 64500 ?       Ssl  Oct18 105:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1661  0.3  0.3 1100896 64704 ?       Ssl  Oct18 105:56 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1732  0.3  0.3 1100896 65044 ?       Ssl  Oct18 106:00 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1734  0.3  0.3 1100896 65212 ?       Ssl  Oct18 105:38 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1792  2.0  3.8 12347228 637880 ?     Rsl  Oct18 694:29 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa      367471  1.1  1.0 11869528 169264 ?     Ssl  Oct21 338:15 node /home/sasa/miko/miko-hr/server/index.js
sasa     2446447  0.4  0.6 11828844 104432 ?     Ssl  Nov09   6:13 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     2511306  0.5  0.5 1330636 83912 ?       Ssl  10:37   3:13 node /home/sasa/miko/miko-hr/api/starter.js
www-data 2552215  0.0  0.0   2608   528 ?        S    19:59   0:00 sh -c ps -aux | grep node
www-data 2552217  0.0  0.0   3304   712 ?        S    19:59   0:00 grep node