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  0.4  0.5 1306124 85932 ?       Ssl   2025 1521:33 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1208  0.3  0.4 1304488 71228 ?       Ssl   2025 1083:53 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11819984 107204 ?     Ssl   2025 1712:55 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1303816 71300 ?       Ssl   2025 1099:05 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1298428 66912 ?       Ssl   2025 1082:20 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.4  2.7 12167136 456364 ?     Ssl   2025 13885:23 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  5.0  3.4 12230556 570040 ?     Ssl   2025 15894:24 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.7 22311168 125872 ?     Ssl   2025 831:14 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.4 1101568 66048 ?       Ssl   2025 742:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1102084 67056 ?       Ssl   2025 741:21 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1101288 66840 ?       Ssl   2025 747:03 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1101316 65040 ?       Ssl   2025 743:16 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1100672 65816 ?       Ssl   2025 740:58 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1166696 65240 ?       Ssl   2025 731:14 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1100128 64484 ?       Ssl   2025 728:30 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.7  0.7 11844956 124120 ?     Ssl   2025 1579:45 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.4 1101816 65848 ?       Ssl   2025 740:28 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1395367  0.3  0.3 1099104 63948 ?       Ssl  May29   4:28 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.8 11835740 137296 ?     Ssl  Apr20 469:53 node /home/sasa/dex8/dex8-www/server/index.js
www-data 1519569  0.0  0.0   2608   524 ?        S    03:02   0:00 sh -c ps -aux | grep node
www-data 1519571  0.0  0.0   3304   716 ?        S    03:02   0:00 grep node
sasa     1904154  0.5  0.6 11812604 102332 ?     Ssl  Apr25 298:01 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.8  0.8 1177432 133472 ?      Ssl   2025 2459:39 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.6 11813944 103280 ?     Ssl   2025 1810:52 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799176 84672 ?      Ssl   2025 1506:38 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.7  0.5 1332680 87036 ?       Ssl  Feb21 992:03 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js