..:: 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 1303908 82292 ?       Ssl  Oct24 304:42 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1200  0.9  0.8 11724288 140836 ?     Ssl  Oct24 541:03 node /home/sasa/dex8/dex8-api/starter.js
sasa        1207  0.4  0.4 1305164 72944 ?       Ssl  Oct24 255:24 node /home/sasa/regoch/regoch-www/server
sasa        1208  0.3  0.4 1303284 70984 ?       Ssl  Oct24 219:23 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  0.9  0.7 11830520 116000 ?     Ssl  Oct24 541:01 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.5  0.6 11813388 98696 ?      Ssl  Oct24 336:21 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1255  0.7  0.5 1330860 84184 ?       Ssl  Oct24 454:45 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa        1257  0.3  0.4 1301892 70440 ?       Ssl  Oct24 222:44 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1298204 66304 ?       Ssl  Oct24 219:28 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  3.1  2.7 12151008 453408 ?     Ssl  Oct24 1905:41 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1449  0.3  0.3 1232360 65472 ?       Ssl  Oct24 230:09 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1528  1.7  2.7 33123288 452876 ?     Ssl  Oct24 1051:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1529  0.3  0.3 1100900 64820 ?       Ssl  Oct24 229:46 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1606  0.3  0.3 1100900 65288 ?       Ssl  Oct24 229:50 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1607  0.3  0.4 1101412 65940 ?       Ssl  Oct24 229:14 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1705  0.3  0.4 1101672 66308 ?       Ssl  Oct24 229:20 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1706  0.3  0.3 1100900 65160 ?       Ssl  Oct24 228:58 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1805  0.3  0.4 1167968 67524 ?       Ssl  Oct24 229:20 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1807  0.3  0.3 1100128 64300 ?       Ssl  Oct24 224:44 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1885  0.3  0.3 1099880 63492 ?       Ssl  Oct24 226:06 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1886  1.7  0.9 11857232 159924 ?     Ssl  Oct24 1055:19 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
www-data  950109  0.0  0.0   2608   532 ?        S    00:38   0:00 sh -c ps -aux | grep node
www-data  950111  0.0  0.0   3304   656 ?        S    00:38   0:00 grep node
sasa     2628167  0.8  0.7 1172184 129284 ?      Ssl  Nov04 357:05 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.5 11840724 98168 ?      Ssl  Nov06 256:49 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.4  0.5 11798664 83108 ?      Ssl  Nov06 169:10 node /home/sasa/@mikosoft/dodo-examples/server/index.js