..:: Source code - 23var_null_obj.js ::..

/**
 * defininig null object
 */

x = 23;
x = null; //redefine variable x to null object
var type=typeof x;

console.log(type +': '+ x); //object: null


if(x==null) console.log('x is null'); //works
else if(x=='') console.log('x is empty string'); //dont work

..:: NodeJS Console - 23var_null_obj.js ::..

object: null
x is null

$ps -aux | grep node (list all node processes)
sasa         914  0.4  0.5 1306128 83600 ?       Ssl  Aug04 236:16 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa         935  0.6  0.8 11787352 132648 ?     Ssl  Aug04 352:58 node /home/sasa/dex8/dex8-api/starter.js
sasa         938  0.3  0.4 1305820 74636 ?       Ssl  Aug04 195:21 node /home/sasa/regoch/regoch-www/server
sasa         945  0.3  0.4 1303752 70684 ?       Ssl  Aug04 171:51 node /home/sasa/dex8/dex8-panel/server/index.js
sasa         947  0.6  0.6 11825080 112048 ?     Ssl  Aug04 355:16 node /home/sasa/dex8/dex8-www/server/index.js
sasa         966  0.5  0.6 11809488 99036 ?      Ssl  Aug04 262:04 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa         980  0.6  0.5 1330076 83068 ?       Ssl  Aug04 348:37 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa         997  0.3  0.4 1301280 69260 ?       Ssl  Aug04 173:25 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1021  0.3  0.3 1297448 65316 ?       Ssl  Aug04 171:00 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1065  0.5  0.5 11802336 90524 ?      Ssl  Aug04 291:55 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa        1074  0.5  0.6 1151232 104332 ?      Ssl  Aug04 282:24 node /home/sasa/voovuu/voovuu-api/starter.js
sasa        1136  0.6  1.0 11880456 173268 ?     Ssl  Aug04 327:42 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1148  0.3  0.4 11794644 77592 ?      Ssl  Aug04 188:46 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa        1197  0.3  0.3 1100908 63628 ?       Ssl  Aug04 176:59 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1199  0.3  0.4 22277756 77168 ?      Ssl  Aug04 178:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1308  0.3  0.3 1100128 64608 ?       Ssl  Aug04 176:22 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1325  0.3  0.3 1100128 63824 ?       Ssl  Aug04 176:27 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1393  0.7  0.8 22318804 138184 ?     Ssl  Aug04 369:18 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1395  0.3  0.3 1100908 64372 ?       Ssl  Aug04 176:57 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1489  0.3  0.3 1100128 63988 ?       Ssl  Aug04 177:01 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1496  0.3  0.3 1100896 65396 ?       Ssl  Aug04 176:09 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1607  0.3  0.3 1100384 63972 ?       Ssl  Aug04 176:32 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1608  0.3  0.3 1100128 63700 ?       Ssl  Aug04 175:31 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1686  0.8  0.8 11842792 144336 ?     Ssl  Aug04 418:42 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1371685  0.3  0.5 11798184 84672 ?      Ssl  Aug16 127:11 node /home/sasa/mikosoft-info/solar-wind-energy/server/index.js
sasa     1460918  0.3  0.4 1299880 65808 ?       Ssl  Aug17 123:37 node /home/sasa/sites-nodejs/oxygen-free-copper/server.js
www-data 4012493  0.0  0.0   2608   592 ?        S    04:08   0:00 sh -c ps -aux | grep node
www-data 4012495  0.0  0.0   3304   708 ?        S    04:08   0:00 grep node