..:: 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        1194  0.5  0.5 1305620 85144 ?       Ssl   2025 1085:22 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1208  0.3  0.4 1305000 73428 ?       Ssl   2025 779:35 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  0.7  0.7 11855552 119824 ?     Ssl   2025 1719:48 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.5  0.6 11819964 108484 ?     Ssl   2025 1233:28 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1304920 73296 ?       Ssl   2025 791:14 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1301872 71436 ?       Ssl   2025 778:08 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.5  3.0 12193960 505420 ?     Ssl   2025 9767:43 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  3.3  2.1 12020592 344292 ?     Ssl   2025 7175:15 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.4  0.7 22311424 125932 ?     Ssl   2025 490:50 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.4 1101568 66208 ?       Ssl   2025 418:30 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1100548 66024 ?       Ssl   2025 417:26 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.3 1101032 65104 ?       Ssl   2025 420:18 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1100548 64716 ?       Ssl   2025 418:24 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.3 1100928 65516 ?       Ssl   2025 417:18 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.4 1102952 66684 ?       Ssl   2025 411:19 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.4 1103200 66824 ?       Ssl   2025 409:41 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.7  0.7 11708808 124432 ?     Ssl   2025 866:56 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.3 1100792 64656 ?       Ssl   2025 416:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2424415  0.3  0.3 1098584 63836 ?       Ssl  03:03   1:54 node /home/sasa/dex8/dex8-worker/starter.js
www-data 2468885  0.0  0.0   2608   596 ?        S    13:04   0:00 sh -c ps -aux | grep node
www-data 2468887  0.0  0.0   3304   652 ?        S    13:04   0:00 grep node
sasa     2509059  0.5  0.6 11824596 101404 ?     Ssl  Feb14 311:46 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.8  0.7 1176152 130780 ?      Ssl   2025 1739:56 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.5 11800976 91460 ?      Ssl   2025 1244:32 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799176 84856 ?      Ssl   2025 1020:14 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.6  0.5 1330104 82592 ?       Ssl  Feb21 276:02 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js