..:: 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 1308416 73844 ?       Ssl   2025 1447:36 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11820924 101588 ?     Ssl   2025 2285:43 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1308516 74332 ?       Ssl   2025 1465:13 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1301776 69904 ?       Ssl   2025 1443:34 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.2  3.3 12252728 543572 ?     Ssl   2025 18377:36 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  7.0  3.7 12274300 608984 ?     Ssl   2025 30461:10 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.7 22311168 124224 ?     Ssl   2025 1234:12 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.4 1101824 65764 ?       Ssl   2025 1128:11 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1101060 66180 ?       Ssl   2025 1126:37 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1102056 66532 ?       Ssl   2025 1135:46 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1102340 64936 ?       Ssl   2025 1129:49 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1101952 66692 ?       Ssl   2025 1125:53 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1166440 64996 ?       Ssl   2025 1117:20 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1100384 64232 ?       Ssl   2025 1112:00 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.8  0.7 11845820 123540 ?     Ssl   2025 2815:01 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.4 1101560 65704 ?       Ssl   2025 1126:12 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.7 11830876 120124 ?     Ssl  Apr20 1506:10 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1631573  0.4  0.6 1322936 100860 ?      Ssl  May31 566:06 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1824679  0.4  0.5 11798592 83884 ?      Ssl  Aug15  28:27 node /home/sasa/kriptus/kriptus-panel/server/index.js
sasa     1835274  2.3  0.7 11842848 118240 ?     Ssl  Aug15 149:48 node /home/sasa/kriptus/kriptus-api/starter.js
sasa     1904154  0.7  0.9 11848552 150036 ?     Ssl  Apr25 1194:42 node /home/sasa/miko/miko-hr/server/index.js
sasa     2290419  0.3  0.3 1097052 61688 ?       Ssl  04:02   0:26 node /home/sasa/dex8/dex8-worker/starter.js
www-data 2301111  0.0  0.0   2608   592 ?        S    06:17   0:00 sh -c ps -aux | grep node
www-data 2301113  0.0  0.0   3304   712 ?        S    06:17   0:00 grep node
sasa     2628167  0.7  0.7 1175516 130224 ?      Ssl   2025 3295:58 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.7 11856724 119540 ?     Ssl   2025 2550:31 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799488 82884 ?      Ssl   2025 2090:59 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.6  0.5 1333448 86264 ?       Ssl  Feb21 1800:45 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js