..:: Source code - 040bool_falsy.js ::..

/**
 * Falsy values: undefined, null, NaN, 0, -0, ""
 */


// The following returns false
console.log(Boolean(undefined));
console.log(Boolean(null));
console.log(Boolean(NaN));
console.log(Boolean(0));
console.log(Boolean(-0));
console.log(Boolean("")); //empty string returns false too
console.log(Boolean('')); //empty string (single quotes)

console.log(Boolean());
 

..:: NodeJS Console - 040bool_falsy.js ::..

$ node 040bool_falsy.js
false
false
false
false
false
false
false
false
$ps -aux | grep node (list all node processes)
sasa        1208  0.3  0.4 1310952 70824 ?       Ssl   2025 1248:19 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11821876 104676 ?     Ssl   2025 1971:12 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1304328 72000 ?       Ssl   2025 1264:25 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1299184 67148 ?       Ssl   2025 1245:35 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.2  2.8 12223140 463884 ?     Ssl   2025 15662:01 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  6.1  3.5 12247984 583444 ?     Ssl   2025 22491:45 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.7 22311168 125416 ?     Ssl   2025 1013:32 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.4 1103104 66664 ?       Ssl   2025 917:10 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1101060 66372 ?       Ssl   2025 915:39 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.3 1101544 65348 ?       Ssl   2025 922:55 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.4 1102596 66276 ?       Ssl   2025 918:02 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1101696 66576 ?       Ssl   2025 915:06 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.4 1166184 65724 ?       Ssl   2025 905:58 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1100128 64576 ?       Ssl   2025 902:06 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.6  0.7 11844700 124320 ?     Ssl   2025 1868:13 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.4 1101816 65732 ?       Ssl   2025 914:57 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.6 11806556 108832 ?     Ssl  Apr20 914:29 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1407255  0.3  0.3 1099356 63632 ?       Ssl  Jul05   3:54 node /home/sasa/dex8/dex8-worker/starter.js
www-data 1514736  0.0  0.0   2608   528 ?        S    00:22   0:00 sh -c ps -aux | grep node
www-data 1514738  0.0  0.0   3304   652 ?        S    00:22   0:00 grep node
sasa     1631573  0.4  0.5 1304188 82284 ?       Ssl  May31 223:01 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1904154  0.6  0.9 11876212 147556 ?     Ssl  Apr25 638:33 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.8  0.7 1175516 130988 ?      Ssl   2025 2821:07 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.5 11823448 98168 ?      Ssl   2025 2134:56 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799488 84404 ?      Ssl   2025 1770:31 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.7  0.5 1332680 85916 ?       Ssl  Feb21 1360:54 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js