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        1194  0.5  0.5 1304776 83244 ?       Ssl   2025 946:24 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1208  0.3  0.4 1304488 72032 ?       Ssl   2025 677:45 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  0.8  0.7 11840664 121976 ?     Ssl   2025 1505:26 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.5  0.6 11817328 107440 ?     Ssl   2025 1072:05 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1305176 72876 ?       Ssl   2025 688:24 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1298092 67796 ?       Ssl   2025 676:34 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.5  3.2 12214140 525984 ?     Ssl   2025 8397:45 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  3.1  1.6 11955032 263968 ?     Ssl   2025 5715:12 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.4  0.7 22311424 125504 ?     Ssl   2025 376:32 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.3 1101312 65012 ?       Ssl   2025 309:37 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1102340 67208 ?       Ssl   2025 308:48 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1102312 66568 ?       Ssl   2025 311:03 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.4 1103108 67204 ?       Ssl   2025 309:29 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1102464 67532 ?       Ssl   2025 308:46 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.4 1101416 65684 ?       Ssl   2025 304:16 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1101664 64752 ?       Ssl   2025 303:09 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.7  0.7 11709320 123104 ?     Ssl   2025 687:20 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.4 1102584 67400 ?       Ssl   2025 308:15 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2509059  0.6  0.6 11823860 100764 ?     Ssl  Feb14 127:44 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.8  0.7 1174616 130688 ?      Ssl   2025 1499:28 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.6 11814864 99596 ?      Ssl   2025 1064:25 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11798920 84860 ?      Ssl   2025 856:36 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.6  0.5 1330464 83216 ?       Ssl  Feb21  63:43 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa     3941234  0.3  0.3 1099356 63648 ?       Ssl  Feb28   4:33 node /home/sasa/dex8/dex8-worker/starter.js
www-data 4050328  0.0  0.0   2608   536 ?        S    02:00   0:00 sh -c ps -aux | grep node
www-data 4050330  0.0  0.0   3304   652 ?        S    02:00   0:00 grep node