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 1304948 83008 ?       Ssl   2025 865:07 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1208  0.3  0.4 1304232 72704 ?       Ssl   2025 617:41 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  0.8  0.7 11830552 120832 ?     Ssl   2025 1378:52 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.5  0.6 11818348 107084 ?     Ssl   2025 976:50 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1255  0.8  0.5 1331116 84596 ?       Ssl   2025 1344:33 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa        1257  0.3  0.4 1304152 73332 ?       Ssl   2025 627:39 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1298576 67528 ?       Ssl   2025 616:41 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.4  2.7 12151108 458404 ?     Ssl   2025 7292:41 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  3.0  1.6 11950588 264160 ?     Ssl   2025 4982:29 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.4  0.7 22311424 125856 ?     Ssl   2025 309:27 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.3 1100544 64704 ?       Ssl   2025 245:35 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.3 1100548 64932 ?       Ssl   2025 244:55 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.3 1101032 65412 ?       Ssl   2025 246:43 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1100548 64288 ?       Ssl   2025 245:24 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.3 1100928 65388 ?       Ssl   2025 244:55 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1099880 63268 ?       Ssl   2025 241:20 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1099104 62576 ?       Ssl   2025 240:26 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.8  0.7 11708552 121504 ?     Ssl   2025 581:15 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.3 1100536 64356 ?       Ssl   2025 244:14 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2509059  0.6  0.5 11795992 82320 ?      Ssl  Feb14   9:07 node /home/sasa/miko/miko-hr/server/index.js
sasa     2552495  0.3  0.3 1098844 63620 ?       Ssl  03:02   2:56 node /home/sasa/dex8/dex8-worker/starter.js
www-data 2617594  0.0  0.0   2608   536 ?        S    17:40   0:00 sh -c ps -aux | grep node
www-data 2617596  0.0  0.0   3304   720 ?        S    17:40   0:00 grep node
sasa     2628167  0.9  0.7 1181508 129468 ?      Ssl   2025 1342:40 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.5 11801184 91184 ?      Ssl   2025 958:32 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11798920 84104 ?      Ssl   2025 759:51 node /home/sasa/@mikosoft/dodo-examples/server/index.js