Test JS script file

Selected file: 22var_undefined.js
Compare console.log() outputs in browser and NodeJS.
Notice: Open browser's console in FireBUG!

  1. 01var_identifier.js
  2. 03var_data_types.js
  3. 03var_data_types_novar.js
  4. 04var_primitiveToObject.js
  5. 05var_string_object.js
  6. 06var_converting_data_types.js
  7. 10var_local_global_outside_function.js
  8. 12var_local_global_inside_function.js
  9. 13var_local_global_inside_function2.js
  10. 14var_local_global_return.js
  11. 16var_global_browser.js
  12. 16var_global_node.js
  13. 20var_Infinity.js
  14. 21var_NaN.js
  15. 22var_undefined.js
  16. 22var_undefined2.js
  17. 23var_empty_string.js
  18. 23var_null_obj.js

..:: Source code - 22var_undefined.js ::..

/**
 * undefined value
 */

var name; //not yet defined variable

var type=typeof name;

//browser - string:
//nodeJS - undefined: undefined
console.log(type +': '+ name);
 

..:: NodeJS Console - 22var_undefined.js ::..

$ node 22var_undefined.js 
undefined: undefined

$ps -aux | grep node (list all node processes)
sasa         831  0.5  0.4 1303528 81256 ?       Ssl  Jun15 121:26 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa         843  0.5  0.6 11699640 104036 ?     Ssl  Jun15 116:55 node /home/sasa/dex8/dex8-api/starter.js
sasa         858  0.4  0.4 1303596 72588 ?       Ssl  Jun15  91:42 node /home/sasa/regoch/regoch-www/server
sasa         867  0.3  0.4 1298972 66664 ?       Ssl  Jun15  86:34 node /home/sasa/dex8/dex8-panel/server/index.js
sasa         886  0.8  0.7 11837192 115348 ?     Ssl  Jun15 182:54 node /home/sasa/dex8/dex8-www/server/index.js
sasa         888  0.5  0.4 11794160 79700 ?      Ssl  Jun15 126:47 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa         904  0.7  0.4 1329652 81636 ?       Ssl  Jun15 168:19 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa         910  0.3  0.4 1300780 69568 ?       Ssl  Jun15  87:20 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa         969  0.3  0.3 1297484 64196 ?       Ssl  Jun15  86:20 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa         970  0.6  0.5 11809492 93628 ?      Ssl  Jun15 155:13 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa        1010  0.6  0.6 1147316 102888 ?      Ssl  Jun15 145:44 node /home/sasa/voovuu/voovuu-api/starter.js
sasa        1016  0.8  1.1 11873276 185944 ?     Ssl  Jun15 192:58 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1086  0.4  0.4 11794400 77852 ?      Ssl  Jun15  93:30 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa        1089  0.3  0.3 1099356 64664 ?       Ssl  Jun15  88:28 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1159  0.3  0.4 22276156 76088 ?      Ssl  Jun15  89:55 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1160  0.3  0.3 1099356 63956 ?       Ssl  Jun15  88:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1241  0.3  0.3 1101208 63296 ?       Ssl  Jun15  88:51 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1242  0.4  0.5 22284380 84048 ?      Ssl  Jun15  94:07 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1323  0.3  0.3 1099100 64176 ?       Ssl  Jun15  88:42 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1324  0.3  0.3 1099616 64320 ?       Ssl  Jun15  88:29 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1398  0.3  0.3 1099360 63428 ?       Ssl  Jun15  88:39 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1400  0.3  0.3 1099356 63724 ?       Ssl  Jun15  88:55 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1465  0.3  0.3 1099616 64172 ?       Ssl  Jun15  88:41 node /home/sasa/dex8/dex8-worker/starter.js
sasa      178968  0.8  0.6 11810912 98900 ?      Ssl  Jun17 161:27 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa      337381  1.2  0.5 1317564 92356 ?       Ssl  Jun19 202:56 node /home/sasa/crypto/dex-arbitrage-bot/scripts/observer/index2
www-data 1163013  0.0  0.0   2608   536 ?        S    23:52   0:00 sh -c ps -aux | grep node
www-data 1163015  0.0  0.0   3304   720 ?        S    23:52   0:00 grep node