..:: 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  0.4  0.5 1305996 84656 ?       Ssl   2025 1173:53 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1208  0.3  0.4 1304488 72744 ?       Ssl   2025 844:08 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  0.7  0.6 11816104 99804 ?      Ssl   2025 1880:11 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.5  0.6 11817488 105824 ?     Ssl   2025 1335:47 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1304920 72412 ?       Ssl   2025 856:58 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1298172 67756 ?       Ssl   2025 842:37 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.5  2.9 12181416 475924 ?     Ssl   2025 10750:50 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  3.5  2.3 12064776 392132 ?     Ssl   2025 8443:52 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.7 22311168 126140 ?     Ssl   2025 563:25 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.4 1101312 65612 ?       Ssl   2025 487:45 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1100804 66468 ?       Ssl   2025 486:32 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1101032 66020 ?       Ssl   2025 489:54 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.4 1101828 65624 ?       Ssl   2025 487:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1101184 66036 ?       Ssl   2025 486:19 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1100904 64412 ?       Ssl   2025 479:14 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1100128 63432 ?       Ssl   2025 477:27 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.6  0.7 11709368 122596 ?     Ssl   2025 981:12 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.3 1101560 65172 ?       Ssl   2025 485:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2509059  0.5  0.7 11831832 126256 ?     Ssl  Feb14 432:48 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.8  0.8 1177176 132468 ?      Ssl   2025 1898:47 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.6 11816592 100460 ?     Ssl   2025 1364:11 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799176 84952 ?      Ssl   2025 1123:55 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.6  0.5 1331932 85668 ?       Ssl  Feb21 426:10 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa     3985796  0.3  0.3 1099360 64584 ?       Ssl  Apr06   4:01 node /home/sasa/dex8/dex8-worker/starter.js
www-data 4079539  0.0  0.0   2608   592 ?        S    00:50   0:00 sh -c ps -aux | grep node
www-data 4079541  0.0  0.0   3304   652 ?        R    00:50   0:00 grep node